JP3204075B2 - Radar identification device and identification method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radar identification apparatus for high-speed identification of a radar from a received radar wave and a method of identifying the same.

[0002]

2. Description of the Related Art FIG. 10 is a functional block diagram showing the configuration of a conventional radar identification device. A radar identification device is a device that receives, analyzes, and identifies radar waves, and stores radar wave characteristic data ( identification data) of various radio wave emission sources stored in advance.
7 ), the source type of the radar wave received from the received radio wave specification 8 of the newly received radar wave is identified,
The result is output as the identification candidate 12. The identification apparatus assigns a point called an ACL value to each item of the radar data in the identification table, and obtains an AC value of the radar data in the identification table that matches the received radio wave item.
Even if the L value is added, the candidate having the highest total value is identified as the identification candidate 1
It is 2.

[0003] In FIG. 10, reference numeral 1 denotes an identification table in which specification information of a plurality of radio wave emission sources is stored for each radio wave emission source. Here, the specifications are characteristics of the radar wave. For example, (1) frequency, (2) pulse width, (3) pulse repetition frequency, (4) occupied frequency bandwidth / modulation type, (5) polarization , (6) antenna rotation speed, and (7) azimuth / approximate position of radio wave emission source. Numeral 2 receives the identification table 1 and a specification overlap degree determination circuit for determining the degree of overlap between different radio wave emission sources for all the specifications. Reference numeral 13 denotes specification overlap degree information which is a determination result of the specification overlap degree determination circuit 2. is there. 31 receives the overlap condition information 13,
An ACL pointing circuit for setting an ACL value indicating the importance of each item according to the degree of overlap, and 4 is an ACL pointing circuit 31
The identification table 7 set the ACL value, the specifications of the radar wave antenna (not shown) is received (hereinafter, reception of radio wave specifications 8) receives and, the, the identification table 7 A
A matching specification ACL value extraction circuit that outputs an ACL value of each specification of the received radio wave specification 8 based on the CL value . A of each specification
The output of the CL value is performed as follows. For each received radio wave specification 8, it is determined whether the specification matches the specification of each radio wave emission source in the identification table 7, and if it matches, the ACL value of the specification is output. Outputs 0. The ACL value 10 of each specification is compiled for each radio wave emission source, and is output to the ACL value addition circuit 5 together with a unit No. 9 for identifying the radio wave emission source.

[0004] 5 receives the matching specification ACL value 10 for all the radio wave emission sources, calculates the sum of the ACL values corresponding to one radio wave emission source (addition result 11), and obtains the unit No. of the radio wave emission source. 9, an ACL value adding circuit 61 receives the addition result 11 and the unit No. 9 corresponding to the addition result 11, selects the unit No. 9 having a large value of the received addition result 11, and selects the unit No. 9 as the identification candidate 12. This is an identification candidate extraction circuit to be output.

Next, the operation will be described. The identification table 1 is a plurality of specification data of a plurality of radio wave emission sources collected in advance. The specification overlap determination circuit 2 determines the degree of overlap of each specification with respect to the identification table 1. Then, the ACL pointing circuit 31 determines and sets the ACL value of each item based on the item overlapping condition 13, thereby creating the identification table 7. Preparation for identification is thus completed.

Next, the operation proceeds to an identification operation. The radar wave to be identified is received by an antenna (not shown), and the data of each item extracted from the radar wave is input to the matched item ACL value extraction circuit 4 as the received radio wave item 8. The matching specification ACL value extraction circuit 4 receives the reception radio wave specification 8 and the identification table 7.
Are compared with each other, and if they match, the ACL value set in the specifications is output. At this time, the unit No. 9 of the radio wave emission source corresponding to the specification of the identified identification table 7 is also output. This collation is performed for all specifications.
For example, when measuring seven specifications as described above,
Match all seven specifications. ACL value addition circuit 5
Adds the ACL values received for each unit No. 9, calculates the sum, and outputs the result as an addition result 11. This addition is performed for all the seven received specifications. At this time, the unit N corresponding to the addition result 11
O.9 is also output at the same time. The identification candidate extraction circuit 61 receives the addition results 11 for all the radio wave emission sources, extracts the one with the largest addition result 11 from among the addition results 11, and outputs it as the identification candidate 12.

[0007]

The conventional radar identification apparatus as described above has a problem that it takes too much time to calculate the ACL value in all the specifications and calculate the total value. In addition, since the largest value is selected from among the addition results 11, the identification candidate 12 cannot be extracted unless the addition result 11 is calculated for the radar data of all the radio wave emitting sources. The extraction took time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a radar identification device and an identification method for performing a high-speed identification process.

[0009]

SUMMARY OF THE INVENTION A radar sensor according to the present invention is disclosed.
In another device, there are multiple types that characterize the type of radio emission source.
Multiple radio waves using the values of
It can be stored for each source and the above radio emission source can be identified
The determined evaluation value with corresponds to the rated specification values as
The identification table to be stored and the
The values of the numerical values and the values of the above
Compare with the original value, and based on the result of the comparison,
Evaluation value extractor that outputs the evaluation values stored in another table
And the evaluation value output by the evaluation value extraction means,
Identification means for identifying the radio wave emitting source that has output the received radio wave
And a plurality of the above-mentioned evaluation specification values are entered.
One of the above-mentioned multiple radio emission sources
Evaluation parameters that can identify the source of radio wave emission
Identification key detecting means for detecting, based on the identification key,
To identify one radio source from the multiple radio sources
Weighting for each of the above-mentioned evaluation specifications so that
Output the weighting as the evaluation value to the identification table.
Evaluation value determining means.

[0010] Further, in the radar identification device according to the present invention.
Information, the plurality of radio wave based on the frequency of the received radio wave
Frequency matching determination means for selecting a radio wave emission source to be collated from the emission source, and the evaluation value extracting means performs the evaluation based on the evaluation specification value for the radio wave emission source selected by the frequency match determination circuit. Outputs the value.

[0011] Further , a radar identification device according to the present invention is provided.
In the following, there are several specifications that characterize the type of radio emission source.
Knowledge of storing values as evaluation specification values for multiple radio emission sources
In a radar identification device having a separate table, the identification
The table shows that the above specifications are based on their importance.
Groups consisting of one or more specifications
And each of these groups is
The set of above-mentioned evaluation specification values for the
The rating set to identify the above radio emission source
The feature is that the value is stored corresponding to the above-mentioned evaluation specification value.
And receives the values of multiple specifications of the received radio wave to be identified.
Above, and the values of these specifications and the corresponding evaluation
Each group is collated and based on the collation results
An evaluation value for outputting the evaluation value stored in the identification table
Extracting means and the evaluation value output by the evaluation value extracting means.
By the above group according to the order of importance
Identification of the radio wave emitting source that outputs the received radio wave
Means for receiving the above-mentioned evaluation values from outside,
One or more specifications are grouped based on the importance of the specifications.
As mentioned above, the above
A group that is a set of evaluation values of multiple radio emission sources
Grouping means that outputs multiple specifications for each group
And the above grouping specifications, and for each of the above groups
One radio source can be identified from the multiple radio sources.
Identification that detects the features of the above evaluation specification values as identification keys
Key detecting means and the grouping unit based on the identification key.
One radio source is identified from the multiple radio sources for each
Determine the weighting for each of the evaluation specification values so that
Evaluation value decision to output to the identification table as the evaluation value
Setting means .

Here, the evaluation value is determined based on characteristics of each radio wave source that can be differentiated from other radio wave sources . The importance is, for example, that the evaluation parameters indicate different values for each radio wave emission source and are characteristic values, or that the measurement parameters of the evaluation parameters are small and highly reliable. Alternatively, it is determined by a combination of these.

[0013] The values of the plurality of specifications for the plurality of radio wave emission sources are stored in advance as evaluation specification values, respectively, and the radar identification for identifying the type of the radio wave emission source that has emitted the received radio wave based on the evaluation specification values. In the method, an important evaluation specification value of some of the plurality of evaluation specification values is compared with a corresponding specification value of the received radio wave, and an evaluation value is output based on the comparison result. A first evaluation step and the first
A first identification step of identifying the received radio wave based on the evaluation value output by the evaluation step of (i) and outputting an identification result as an identification candidate when the identification is successful; and An evaluation parameter value that has not been compared in the first evaluation step is compared with a parameter value of the received radio wave corresponding to the evaluation parameter value, and an evaluation value is output based on the comparison result. 2 evaluation steps;
A second identification step of identifying the received radio wave based on the evaluation value output by the second evaluation step, and outputting the identification result as an identification candidate when the identification is successful.

Here, the important evaluation specification values are, for example, that the evaluation specification values indicate different values for each radio wave emitting source and are characteristic values, or that the evaluation specification values are measured. It is determined by a value having a small error and a high reliability, or a combination thereof.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a functional block diagram showing a configuration of the radar identification device according to the first embodiment. In FIG. 1, reference numeral 1 denotes an identification table in which specification information of a plurality of radio wave emission sources is stored for each radio wave emission source. Here, the specifications are characteristics of the radar wave. For example, (1) frequency, (2) pulse width, (3) pulse repetition frequency, (4) occupied frequency bandwidth / modulation type, (5) polarization , (6) antenna rotation speed,
(7) There is an azimuth / approximate position of the radio wave emission source, and the like. Reference numeral 17 denotes an important radio wave specification grouping circuit that receives the identification table 1, extracts, from a plurality of specifications, those that often have different values in all radar data as important radio wave specifications, and performs grouping in order of importance. Reference numeral 15 denotes a grouping parameter output by the important radio wave parameter grouping circuit 17, for example, frequency, pulse repetition cycle (hereinafter, PRI), and pulse width (hereinafter, PW) are grouped. .
These parameters are selected because they often show different (characteristic) values depending on the radio wave emitting source.

An identification key specification determination circuit 14 receives the grouping specification 15 and determines which of the specifications matches to uniquely identify the radio wave emission source. Reference numeral 16 denotes this identification key specification determination circuit 14. The identification key data is a result of the determination of, for example, "The characteristic of a certain radio wave emission source is that the frequency is 9 GHz.
z, PRI = 3 ms ”. 3 receives the identification key specification 16 and, based on the identification key specification 16,
This is an ACL point distribution circuit that sets an ACL value so that a type of a radio wave emission source can be specified by a sum of ACL values of various specifications corresponding to one radio wave emission source. The identification table 7 output from the ACL allocation circuit 3 includes data of a plurality of specifications for a plurality of radio wave emission sources that are grouped and ACLs assigned corresponding to the data of these specifications.
Contains a value.

When a plurality of groups are set in the important radio wave specification grouping circuit 17, the identification key specification determination circuit 14 determines an identification key for each group.
The CL allocation circuit 3 allocates an ACL value for each group.

FIG. 2 shows an example of the identification table 7. In FIG. 2, t1 is a specification, t2 is radar data which is a set of a plurality of specification values t4 for a radio wave emission source (radar), and t3 is a plurality of specifications grouped according to the importance of the specification t1. In a grouping specification t4, which is a set, a specification value which is a value of one specification corresponding to one radio wave emission source and an ACL value corresponding to the specification value t4 are stored.

4 receives and compares the identification table 7 with the data of a radar wave received by an antenna (not shown) (hereinafter referred to as received radio wave data 8).
Is a matched specification ACL value extraction circuit that outputs an ACL value of the specification when the specification of the received radio wave matches the received radio wave specification 8. The output of the ACL value of each item is performed as follows. For each received radio wave specification 8, it is determined whether or not the value of the specification matches the value of the specification of each radio wave emission source in the identification table 7, and if they match, the ACL value of the specification is output. If they do not match, 0 is output. ACL value of each item 10
Are collected for each radio wave emission source and output to the ACL value addition circuit 5 together with the unit No. 9 for identifying the radio wave emission source.

5 receives the matching specification ACL values 10 for all the radio emission sources, calculates the sum of the ACL values corresponding to one radio emission source (addition result 11), and obtains the unit No. of the radio emission source. The ACL value adding circuit 6 outputs the addition result 11 and the unit No. 9 corresponding to the addition result 11, and when the value of the received addition result 11 is equal to or larger than a predetermined reference value, , A unit No. 9 corresponding to the addition result 11 is selected and output as an identification candidate 12. The unit No. 9 is a number indicating the type of radar of the radar data t2 shown in FIG. 2, for example, 6.

Next, the operation will be described. The identification table 1 is a plurality of specification data of a plurality of radio wave emission sources collected in advance. The important radio wave specification grouping circuit 17 extracts, from the plurality of specifications, those which often have different values for each radio wave emission source as important specifications from the identification table 1 and performs grouping. For example, when there are seven specifications as described above, frequency, PR
Extract I and PW. The specifications extracted here have many variations in the values of the specifications. For example, it is assumed that six types of frequencies are detected by ten types of radio wave emission sources. On the other hand, the specifications that are not extracted are those in which there are few variations in the values of the specifications, for example, those in which only two values are detected by ten types of radio wave emission sources. Here, it is assumed that the above-mentioned three specifications are grouped into one group because there are many variations in the values of the specifications. Then, similar grouping is performed for the remaining specifications. This grouping is performed in the order of importance, with the most important item to the third most important item as the first group, and the fourth to sixth importance items. Are the second group. Then, up to the n-th group is finally created.

Next, the identification key specification judging circuit 14 uses the grouping specification 15 to check the specification that can specify the radio wave emitting source and its value. For example, if the grouping specifications are as shown in Table 1, the identification key specifications 16 are determined as follows. The radar data a of the radio wave emission source A can be uniquely identified if the frequency and the PRI match. The radar data b of the radio wave emission source B can be uniquely identified if the PRI matches. The radar data c of the radio wave emitting source C can be uniquely identified if the frequencies match.

[0023]

[Table 1]

Next, the ACL scoring circuit 3 assigns ACL values based on the identification key data 16 (this data includes data of each data as shown in Table 1).
This scoring is performed based on the following conditions. (1) The sum of ACLs of radio wave specifications that can uniquely determine a radio wave emission source (radar) always exceeds a reference value. (2) The total ACL of the radio wave emission sources that cannot uniquely determine the radio wave emission source (radar) never exceeds the reference value.

When the ACL values are assigned to the grouping data shown in Table 1 in accordance with the above criteria, the following Table 2 is obtained. In Table 2, the reference value is set to 10.

[0026]

[Table 2]

The ACL value is assigned to the grouping data,
Those processed as shown in Table 2 are output as the identification table 7. This identification table 7 is stored in the matching specification ACL value extraction circuit 4. Preparation for identification is thus completed.

Next, the operation proceeds to the identification operation. The radar wave to be identified is received by an antenna (not shown), and the data of each item extracted from the radar wave is input to the matched item ACL value extraction circuit 4 as the received radio wave item 8. The matching specification ACL value extraction circuit 4 receives the reception radio wave specification 8 and the identification table 7.
Are compared with each other, and if they match, the ACL value set in the specifications is output. At this time, the unit No. 9 of the radio wave emission source corresponding to the specification of the identified identification table 7 is also output. This collation is performed, for each group, on the data selected by the important radio wave data grouping circuit 17 unlike the conventional technology. For example, even when there are seven specifications, the three specifications (frequency, PR
I, PW), and finally the identification candidate 1
If No. 2 is not obtained, the collation is performed on the three specifications of the next group. (However, if parallel processing can be performed with the identification candidate extraction circuit 6 and the like, the collation processing of the first group ends. Then, the collation processing of the second group may be started).

For example, frequency = 9 GHz, PRI = 3 ms,
When a radar wave having a specification of PW = 1 μs is received, the received wave is compared with each radar data in the identification table 7, and the specification value of the reception wave and the specification value of the radar data in the identification table 7 are obtained. It is determined whether or not matches. Then, if they match, an ACL value corresponding to the matching data is output. When the radar data a of the radio wave emitting source A is compared with the above-mentioned received wave, the frequency, PRI, and PW match, and the output ACL values are 5, 5, 0, respectively.
Becomes When the radar data b of the radio wave emitting source B and the above-mentioned received wave are compared with the radar data c of the radio wave emitting source C and the above-mentioned received wave, the following results are obtained. For the radar data b, only the frequency matches, and the output ACL values are 0, 0, and 0, respectively. For the radar data c, only PRI and PW match, and the output ACL values are 0, 0, and 0, respectively.

The unit No. 9 of the radio wave transmitting source transmitted together with the ACL value as the collation result is, for example, 1, 2, and 3 for each of the radio wave transmitting sources A, B, and C. .

The ACL value adding circuit 5 adds the ACL values received for each unit No. 9, calculates the total, and outputs the result as an addition result 11. This addition is performed for each group. At this time, the unit No. 9 corresponding to the addition result 11 is output at the same time. For example, when the ACL value for the radio wave emission source A is 5, 5, 0, the addition result 11 is 10, and the unit NO.
9 is 1. As described above, when the addition result 11 of the radio wave emission source B and the radio wave emission source C is 0, 0, 0, the result is 0, and the unit No. 9 output simultaneously is 2, 3, respectively. .

The identification candidate extraction circuit 6 receives the addition results 11 for a plurality of radio wave emitting sources, and extracts those having a reference value or more from the addition results 11. Then, the unit No. 9 corresponding to the addition result 11 having the reference value or more is output as the identification candidate 12. here,
The identification candidate extraction circuit 6 can determine the identification candidate 12 without receiving the addition result 11 for all the radio wave emission sources. That is, no matter what kind of received radio wave specification 8 set in the identification table 1 is input, the addition result 11 out of the addition results 11 corresponding to all the radio wave emission sources, respectively.
Each ACL should be one so that
Since the values are assigned points, when the received addition result 11 is equal to or larger than the reference value, it can be immediately determined as a candidate for identification.

For example, in the above example, the ACL pointing circuit 3
The reference value set in step was 10. When this reference value is compared with the addition result 11 ([10, 0, 0] for each unit No. 9 [1, 2, 3]), the unit No. 9 in which the addition result 11 is equal to or more than the reference value is 1 Only. Therefore,
The identification candidate 12 output by the identification candidate extraction circuit 6 is “1” representing the radio wave emission source A. Here, the radio wave emission source A
When the (unit No. [1]) is input, the identification candidate 12 is identified and immediately output as the identification candidate 12. Then, the radio wave emission source B (unit NO.
[2]), there is no need to wait for the addition result 11 for the radio wave emission source C (unit No. [3]), nor to make a determination. In the above description, there are three types of radio wave emission sources to be identified for the sake of simplicity. However, in practice, identification is performed for many radio wave emission sources, so that the effect of improving the speed is great.

The matching specification ACL extraction circuit 4 outputs the ACL value for one radio wave emission source as soon as it is extracted, and outputs the ACL value.
The value addition circuit 5 calculates the addition result 11 for one radio wave emission source.
Is performed, the time until the identification candidate 12 is obtained is much shorter than in the conventional case, and the result can be obtained at high speed. However, even in the worst case, such as when the identification candidate 12 that matches the received radio wave appears last, except for the utility of grouping by the important radio wave data 17 (in consideration of this point, Even in this case, the speed is much faster than the conventional technology), and the speed is the same as the conventional technology. However, for example, if the appearance probabilities of the respective radio wave emission sources are equal, the processing time can be simply reduced to about 1/2 (average).

The identification candidate extraction performed by the identification candidate extraction circuit 6 includes a case where the identification candidate 12 is obtained and a case where the identification candidate 12 is not obtained. The case where it cannot be obtained is a case where none of the addition results 11 exceed the reference value, and the radio wave emission source cannot be identified by any of the specifications and the combination thereof used for the verification of a certain specification group. Is the case. As described above, when the identification candidate 12 cannot be obtained in the current group, each of the matched specification ACL value extraction circuit 4, the ACL value addition circuit 5, and the identification candidate extraction circuit 6 described above based on the specification of the next group. Is performed. For example, the identification candidate 12 is identified based on the three specifications of the first group, and if the identification candidate 12 cannot be identified, the identification candidate 12 is identified based on the three specifications of the next second group. Perform identification. Then, the extraction process of the identification candidates 12 is performed while changing the group one after another until the identification candidates 12 are obtained. Then, when the identification candidate 12 is obtained, the identification processing of the received radio wave specification 8 is completed.

As described above, the calculation of the ACL value and the extraction of the identification candidates 12 are performed on the grouped specifications, so that the identification candidates 12 can be obtained when some of the specifications are verified. In many cases, high-speed identification processing can be performed. In particular, since the important specification radio wave grouping circuit 17 performs grouping in the order of importance, it is highly possible that the identification candidate 12 is obtained in the first group, and the processing can be performed at higher speed. is there. Therefore, the time from receiving the received radio wave to obtaining the identification candidate 12 can be significantly reduced.

Embodiment 2 FIG. 3 is a functional block diagram showing a configuration of the radar identification device according to the second embodiment. 3, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. Reference numeral 18 receives the received radio wave data 8 and the identification table 7 and extracts radar data whose frequency matches the received radio wave data 8 from the radar data of the plurality of radio wave emission sources defined in the identification table 7. The unit number for identifying the extracted radar data (hereinafter referred to as “matching unit number”) is the matching specification A.
This is a frequency match determination circuit that outputs to the CL value extraction circuit 41. 41 receives the identification table 7, the received radio wave data 8, and the matching unit No. output by the frequency match determination circuit 18, and receives the radar data and the received radio wave data of the identification table 7 indicated by the matching unit No. 8 is compared, and when the value of the specification of the identification table 7 matches the value of the received radio wave specification 8, the matching specification A which outputs the ACL value of the specification is output.
This is a CL value extraction circuit.

Next, the operation will be described. The basic operation is the same as that of the radar identification device shown in the first embodiment. Therefore, a characteristic operation of the second embodiment will be described. When the ACL allocation circuit 3 outputs the identification table 7, the matching specification ACL value extraction circuit 41 and the frequency match determination circuit 18 receive the identification table 7. The frequency match determination circuit 18 compares the specifications of the frequency in the identification table 7 with the frequencies of the received radio wave specifications 8, and when the frequencies match, the match unit NO. For identifying the radar data. Is output. On the other hand, if they do not match, no matching unit number is output. This comparison is performed for all the radar data in the identification table 7. In the description of the second embodiment, the frequency match determination circuit 18 has been described to receive all the information in the identification table 7, but the information for identifying the radio wave emission source and the frequency corresponding to this radio emission source can be found. It is sufficient if it is a table, and it is not necessary to input all the specifications.

Next, the matching specification ACL value extracting circuit 41 receives the matching unit number, and receives the value of the radar data specification of the radio wave emitting source designated by the matching unit number and the value of the reception radio specification 8. And an ACL value is extracted. This extraction is performed in the same manner as in the matching specification ACL value extraction circuit 4 shown in FIG. 1, and an ACL value 10 and a unit No. 9 are output. Here, since the radar data collated by the matching specification ACL value extraction circuit 41 is limited to the radar data indicated by the matching unit No., the number of times of matching is reduced, and higher-speed processing can be performed.

In general, the frequency is the data that best represents the characteristics of the radio wave emission source. By performing the processing of the frequency match determination circuit 18, the radar data to be collated is considerably narrowed down. Therefore, the number of times of collation and calculation can be greatly reduced, which greatly contributes to speeding up. In addition, in order to reduce the data to be processed in a portion corresponding to the upstream of a series of candidate extraction processing, not only the processing of the matching specification ACL value extraction circuit 41 but also the subsequent ACL value addition circuit 5 and identification candidate extraction circuit 6 It is possible to obtain a great effect that the operation is performed at high speed.

Thereafter, the same operation as in the first embodiment is performed, and the identification candidates 12 can be extracted at high speed.

Embodiment 3 In the important radio wave specification grouping circuit 17 of the first embodiment,
For all the specifications in the identification table 1, the specifications that often differ for each radar data of each radio wave emitting source (radar) are determined and extracted. May be automatically output as the grouping data 15 without making the determination.

FIG. 4 is a functional block diagram showing the configuration of the radar identification device according to the third embodiment. 4, the same reference numerals as those in FIG. 1 denote the same or corresponding parts.
Reference numeral 19 denotes an easily set radio wave element grouping circuit that receives the identification table 1 and outputs the information of the preset important radio wave parameters and the received identification table 1 to the important radio wave element grouping circuit 17.

The basic operation is the same as that described in the first embodiment. Therefore, the characteristic operation of the third embodiment will be described. When the easy setting radio wave specification grouping circuit 19 receives the identification table 1, the information of the preset important radio wave specification and the received identification table 1 are output to the important radio wave specification grouping circuit 17. Next, the important radio wave specification grouping circuit 17 determines which of the specifications other than the important radio wave specifications designated by the easily set radio wave specification grouping circuit 19 are the important specifications. . Then, the important specifications determined as a result of this determination and the important radio specifications specified by the easy setting radio specification grouping circuit 19 are combined into a grouping specification 15, which is output to the identification key specification determination circuit. .

Thereafter, the same operation as in the first embodiment is performed, and the setting of the identification table 17 and the extraction of the identification candidates 12 are performed.

By performing such processing, the number of items for judging the importance is reduced, so that the operation of the important radio wave item grouping circuit 17 can be performed at high speed.

Embodiment 4 In the first embodiment, the identification table 1 in which all the parameters are set is used. However, the identification candidates 12 can be extracted even if the values of the parameters are not set in some of them. . FIG. 5 is a functional block diagram showing the configuration of the radar identification device according to the fourth embodiment. In FIG. 5, FIG.
The same reference numerals denote the same or corresponding parts. Since the operation of the fourth embodiment is basically the same as that of the first embodiment, the characteristic operation of the fourth embodiment will be described.

First, the important specification grouping circuit 1 receives the identification table 1 in which some of the specification values are not set.
7 skips the values of the parameters that have not been set and determines important parameters. For example, when seven types of values and one type for which no value is set are detected for a certain type of data, the type of the value of the data is determined to be 7, and based on this value, is it important? A determination is made as to whether the data is a grouping item 15 or not. Subsequently, the identification key specification determination circuit 14 outputs the identification key specification 16 and, based on this,
The L-score circuit 3 assigns ACL values. At this time, the ACL value of a portion where no specification value is set is set to 0.

According to the above-described processing, the specification for which the value is not set does not affect the addition result 11, and the identification candidate 12 is extracted based on the other specification. Therefore, the identification candidate 12 can be normally extracted even if the identification table 1 in which the values of the specifications are not set is used.

Embodiment 5 Embodiment 5 is an embodiment in which, when it is known in advance that the value is a characteristic value, the ACL value is assigned without determining whether or not the value is an important radio wave specification. FIG. 6 is a functional block diagram illustrating the configuration of the radar identification device according to the fifth embodiment. 6, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. 21 is a characteristic radio wave specification and its A
The CL value is stored in advance, and the ACL value of the specification is output to the ACL scoring circuit 3, and the specification other than the characteristic radio wave specification among the plurality of specifications set in the identification table 1 received from the outside. Is output to the important radio wave specification grouping circuit 17. 3a receives an ACL value for a characteristic radio parameter from the characteristic radio parameter distribution circuit 21, sets the ACL value in the identification table 7, and receives the characteristic radio parameter received from the identification key parameter determination circuit 14. This is an ACL scoring circuit that performs ACL scoring for specifications other than elements.

Next, the operation will be described. Since the operation of the radar identification device of the fifth embodiment is basically the same as the operation of the radar identification device of the first embodiment, the characteristic operation of the fifth embodiment will be described. First, when the characteristic radio wave specification pointing circuit 21 receives the identification table 1, it extracts specifications other than the previously stored characteristic radio wave specifications from the identification table 1 and outputs the extracted data to the important radio wave specification grouping circuit 17. Then, the important radio wave specification grouping circuit 17 and the identification key specification determination circuit 14 operate in the same manner as described in the first embodiment.

On the other hand, in the characteristic radio specification point distribution circuit 21,
The characteristic radio wave parameters and the ACL points of the parameters are stored in advance, and the stored ACL points are output to the ACL point circuit 3a. Here, the ACL point is stored in the characteristic radio wave specification point circuit 21. However, the ACL point point may be stored in the ACL point circuit 3a in advance. In addition, characteristic radio wave specifications and A
The designation of the CL allocation is set in advance by the user. For example, when the frequency of a radio wave emitted from a certain radio wave emission source is a characteristic characteristic different from the frequency of a radio wave emitted from another radio wave emission source, specifications of the radio wave emission source,
That is, the points are allocated so that the ACL value of the frequency is equal to or higher than the reference value.

The ACL pointing circuit 3a receives the identification key specification 16 from the identification key specification determination circuit 14 and the characteristic radio specification A
The CL value is received, and the ACL value is assigned based on the information. First, the ACL value received from the characteristic radio wave specification distribution circuit 21 is set to the corresponding specification in the identification table 7. Next, ACL for the specifications other than important radio wave specifications
Set the value. This setting is performed based on the identification key specifications 16. In addition, the above ACL conditions (1) The sum of ACLs of radio wave specifications that can uniquely determine a radio wave emission source (radar) always exceeds a reference value. (2) The total ACL of the radio wave emission sources that cannot uniquely determine the radio wave emission source (radar) never exceeds the reference value. Is determined by the AC already assigned to the characteristic radio
This is performed in consideration of the L value. That is, the total ACL is calculated by the sum of the newly set ACL value and the ACL value set for the characteristic radio wave data.

The identification table 7 set as described above
Is output to the matching specification ACL value extraction circuit 4 and thereafter operates as described in the first embodiment to output the identification candidate 12.

According to the radar identification apparatus of the fifth embodiment, erroneous identification due to a measurement error can be prevented. That is, since it is possible to specify the radio wave emission source only by looking at the preset characteristic radio wave specifications, even if there is an error in the measurement values of the specifications set in the identification table 1, the characteristic radio wave It is possible to accurately identify a radio wave source having specifications. For example, suppose that there is a measurement error in the PRI of a certain radio wave transmission source A among the specifications set in the identification table 1. At this time, if the characteristic radio wave parameters are not set, the parameters having this measurement error may be set as the identification key parameters. There is a possibility that 12 candidates are output. Further, even if there is no measurement error in the data of a certain radio wave emission source A, the data which is not originally the identification key data due to the error in the data of the data of the other radio wave emission source A may cause the radio wave emission source A It may be selected as the identification key data. On the other hand, when characteristic radio wave specifications are set, even if there are specifications including measurement errors, the identification candidate is identified by the preset characteristic radio wave specifications. As long as there is no fatal measurement error, the identification candidate 12 can be output normally.

Embodiment 6 FIG. Embodiment 6 is an embodiment in which, when the received radio wave specification 8 includes characteristic radio wave specifications, the identification value is output immediately without adding the ACL value or the like. FIG. 7 is a functional block diagram illustrating the configuration of the radar identification device according to the sixth embodiment. 7, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. Numeral 22 stores in advance the characteristic radio parameter values, checks whether or not the value of the received radio parameter 8 includes the characteristic radio parameter values. This is a characteristic radio wave item identification circuit that outputs a radio wave emission source corresponding to an original value as an identification candidate 12.

Next, the operation will be described. Since the operation of the radar identification device of the sixth embodiment is basically the same as that of the first embodiment, the characteristic operation of the sixth embodiment will be described. When the characteristic radio wave specification identifying circuit 22 receives the received radio wave specification 8, the value of the received radio wave specification 8 is compared with a previously stored characteristic radio specification value. If the comparison result is “match”, the radio wave emission source corresponding to the characteristic radio wave data is output as the identification candidate 12. On the other hand, if the comparison result is “mismatch”,
Is output to the matching specification ACL value extraction circuit 4. Thereafter, the same operation as in the first embodiment is performed, and the identification candidate 12 is output.

According to the sixth embodiment, when the value of the received radio wave specification 8 has a characteristic radio wave specification value, the identification candidate 12 is immediately output without performing processing such as addition of the ACL value. Therefore, processing can be performed at high speed.

Embodiment 7 FIG. Embodiment 7 relates to an improvement of the important radio wave specification grouping circuit 17, and is an embodiment in which the reliability of the specification is considered when determining whether the specification is important.

FIG. 8 is a functional block diagram showing the configuration of the radar identification apparatus according to the seventh embodiment. 8, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. 17
“a” receives the identification table 1 and the reliability information of the items included in the identification table 1, and often has different values in all radar data from a plurality of items, and is expected to have high reliability. This is an important radio wave specification grouping circuit that extracts objects as important radio wave specifications and performs grouping.

As described above, the important radio wave specification grouping circuit 17a according to the seventh embodiment judges whether or not each radio wave is important in consideration of the reliability of each specification. For example, assuming that the frequency has high reliability and that the plurality of radio wave emission sources often show different values, the specification of this frequency is determined to be important. Compared to such specifications, a plurality of radio wave emission sources often show different values, but low-reliability specifications that are expected to have many measurement errors have lower importance. In addition, although the reliability is high, the same is true for specifications having similar values. The least important factor is a value that shows a similar value among a plurality of radio wave emission sources and has low reliability.

The above-mentioned reliability information can be given as a table arranged in order from data having high reliability in consideration of the range of the measurement error known in advance, that is, a reliability order data list. . Here, the reliability information only needs to know the degree of reliability of each specification, and does not necessarily have to be in the form of the reliability order specification list as described above.

When grouping is performed in consideration of reliability as described above, the groups output from the important radio wave specification grouping circuit 17a are the first group, the second group,... It becomes the n-th group. Therefore, the extraction of the identification candidates 12 performed by the identification candidate extraction circuit 6 is as follows.
First, identification candidate 1 based on highly reliable grouping data
2 is identified, and if the group cannot be identified, the identification candidate 12 is identified based on the next most reliable grouping item.

As described above, according to the radar identification apparatus of the seventh embodiment, it is determined whether or not each item is important in consideration of the reliability of each item, so that the identification accuracy can be improved.

Embodiment 8 FIG. The eighth embodiment relates to an improvement of the important radio wave specification grouping circuit 17, and when the specification that is difficult to measure is known in advance, the importance of the specification other than the measurement difficult is determined. This is an embodiment of determining whether or not the grouping is performed.

FIG. 9 is a functional block diagram showing the configuration of the radar identification device according to the eighth embodiment. 9, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. 1
7b receives the information of the specifications that are difficult to measure (hereinafter referred to as difficult-to-measure specification information), and receives the important radio wave specifications of the first embodiment for the specifications other than the specifications specified in the difficult-to-measure specification information. This is an important radio wave specification grouping circuit that performs the grouping described in the former grouping circuit 17.

Some of the actual received radio wave specifications 8 are difficult to measure. Since there is a high possibility that such specifications will not be actually used, the important radio wave specification grouping circuit 17b excludes the important radio wave specifications and performs grouping on the remaining specifications. Therefore, the grouping process becomes faster. If the identification table 7 includes data that is difficult to measure without using the radar identification device according to the eighth embodiment, the identification candidate 12 cannot be determined based on the grouping data including the data. There is. In such a case, the identification candidate 12 cannot be determined even though the grouping data includes characteristic data. As a result, the identification candidate 12 cannot be extracted on the basis of more effective specifications, and the recognition rate is reduced because the judgment is made based on other specifications, and the identification candidate 12 may not be extracted. On the other hand, according to the eighth embodiment, the identification candidate 12 can be extracted more accurately without the above.

[0068]

The present invention is configured as described above.
Therefore, the following effects are obtained. The invention
In the radar identification device according to
Use the values of the characteristics to be evaluated as evaluation specification values
In addition to storing for each radio wave source,
The evaluation value determined so that the source can be identified
An identification table that is stored in association with a value,
Values of multiple received radio waves and their corresponding values
The above evaluation specification values are compared with each other.
Output the evaluation value stored in the identification table based on
Evaluation value extracting means and the evaluation value output by the evaluation value extracting means.
Based on the value, the source of the radio wave that output the received radio wave is identified.
Differentiating means and a plurality of the above-mentioned evaluation specification values are inputted,
From the plurality of evaluation specification values, the plurality of
An evaluation parameter value that can identify one radio wave source from the source
Identification key detecting means for detecting as an identification key;
Based on the key, one radio wave from the above multiple radio wave emission sources
Weighting for each of the above evaluation parameters so that the firing source can be identified
Is determined, and the weight is used as the evaluation value.
And evaluation value output means to output to the
Identification can be performed.

Further , the radar identification apparatus according to the present invention has
Information, the plurality of radio Hazuki groups the frequency of the received radio wave
Frequency matching to select the radio emission source to be matched from the emission source
Determining means, wherein the evaluation value extracting means includes:
The above evaluation of the radio wave emission source selected by the matching circuit
The above evaluation values are output based on the specification values, so
You can do another.

Further, the radar identification apparatus according to the present invention
The values of several parameters that characterize the type of radio emission source
Is stored for each of multiple radio emission sources as evaluation parameters
In a radar identification device equipped with an identification table
In the identification table, the above-mentioned multiple specifications
Multiple groups consisting of one or more specifications based on
Split into loops and each of these groups
A collection of the above evaluation values for the items that make up the group
In some cases, it is set so that the above radio emission source can be identified.
Storing the obtained evaluation value in correspondence with the above-mentioned evaluation specification value.
The value of multiple specifications of the received radio wave to be identified
Received and the above specification values corresponding to the values of these specifications
Are compared for each of the above groups, and
Output the evaluation value stored in the identification table based on
Evaluation value extracting means, and the evaluation output by the evaluation value extracting means
Values should be evaluated for each of the above groups according to the order of importance.
Identifies the radio wave emitting source that has output the received radio wave
The identification means and a plurality of the above-mentioned evaluation specification values are inputted, and the above-mentioned specification
One or more specifications are grouped based on their original importance
And the above-mentioned plural
Grouping, which is a set of evaluation values
Grouping means for outputting a plurality of elements for each group,
Received the grouping specifications, and
The above can identify one radio emission source from the number of radio emission sources
Identification key detection means for detecting an evaluation value as an identification key
And, based on the identification key,
One radio emission source can be identified from a number of radio emission sources
To determine the weighting for each of the above-mentioned evaluation specification values, and
Evaluation value decision to output to the identification table as the evaluation value
Setting means, and the evaluation value extracting means has a high importance.
Perform the above collation on the evaluation value of the group, and
For the loop, the source of the received radio wave
, The next most important group
High-speed identification because the above collation is performed for the evaluation specification values of
It can be performed.

Furthermore, a radar identification method according to the present invention
In the law, multiple specifications for multiple radio emission sources
Are stored in advance as evaluation specification values.
Type of radio wave emission source that emitted the received radio wave based on the specification values
In the radio wave source identification method for identifying
Some important valuation values of the value specifications
Compare the values of the above received radio waves with the values of
A first evaluation step of outputting an evaluation value based on
Based on the evaluation value output by the first evaluation step
Identifies the radio wave and identifies the identification result if it can be identified
A first identifying step of outputting as a candidate,
If the identification is not successful in the identification step,
Evaluation values that were not compared in step 1
The values of the above-mentioned received radio waves corresponding to the
A second evaluation for comparing and outputting an evaluation value based on the comparison result
Value step and the evaluation output by this second evaluation step
If the above received radio waves are identified based on the value and the identification is successful
A second identification step for outputting the identification result to the
Since it is provided with a loop, identification can be performed at high speed.

[0072]

[Brief description of the drawings]

FIG. 1 is a functional block diagram illustrating a configuration of a radar identification device according to Embodiment 1 of the present invention.

FIG. 2 is a data structure diagram showing an identification table according to the first embodiment of the present invention.

FIG. 3 is a functional block diagram illustrating a configuration of a radar identification device according to a second embodiment of the present invention.

FIG. 4 is a functional block diagram showing a configuration of a radar identification device according to Embodiment 3 of the present invention.

FIG. 5 is a functional block diagram showing a configuration of a radar identification device according to Embodiment 4 of the present invention.

FIG. 6 is a functional block diagram showing a configuration of a radar identification device according to Embodiment 5 of the present invention.

FIG. 7 is a functional block diagram showing a configuration of a radar identification device according to Embodiment 6 of the present invention.

FIG. 8 is a functional block diagram showing a configuration of a radar identification device according to a seventh embodiment of the present invention.

FIG. 9 is a functional block diagram showing a configuration of a radar identification device according to Embodiment 8 of the present invention.

FIG. 10 is a functional block diagram illustrating a configuration of a radar identification device according to a conventional technique.

[Explanation of symbols]

1 identification table, 3 ACL pointing circuit, 4 matching specification ACL value extracting circuit, 5 ACL value adding circuit, 6
Identification candidate extraction circuit, 7 Identification table (ACL set), 8 Received radio wave specifications, 9 Unit No., 1
2 Identification candidate, 14 Identification key judgment circuit, 17 Important radio wave specification grouping circuit, 19 Easy measurement radio specification grouping circuit, 21 Characteristic radio specification scoring circuit

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-5-164846 (JP, A) JP-A-7-12925 (JP, A) JP-A-6-242222 (JP, A) JP-A-6-242 82551 (JP, A) JP-A-8-43520 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01S ⁷ /00-7/42 G01S 13/00-13/95

Claims (4)

(57) [Claims] 1. A rating characterizes the type of radio wave source a plurality of various values each specification value plurality of radio wave source each as
And an identification table for storing the evaluation value determined so as to be able to identify the radio wave emission source in association with the evaluation specification value, a plurality of specification values of the received radio wave to be identified, and The value of the specification and the corresponding evaluation specification are compared,
Evaluation value extracting means for outputting an evaluation value stored in the identification table based on the comparison result; and identification means for identifying a radio wave emitting source which has output the received radio wave based on the evaluation value output by the evaluation value extracting means. And a plurality of the above-mentioned evaluation specification values are inputted.
One of the values from the above
Detecting evaluation values that can identify the wave source as identification keys
An identification key detection means for, based on the identification key, one from the plurality of radio wave source
So that two radio emission sources can be identified.
Determine the weighting, and use the weighting as the evaluation value.
Evaluation value determining means for outputting to the identification table
A radar identification device characterized by the following . 2. The apparatus according to claim 1, further comprising: frequency match determination means for selecting a radio wave emission source to be collated from the plurality of radio wave emission sources based on the frequency of the received radio wave, wherein the evaluation value extraction means is selected by the frequency match determination circuit. The radar identification device according to claim 1, wherein the evaluation value is output based on the evaluation specification value of the generated radio wave emission source . (3)Multiple sources characterizing the type of radio emission source
For each of multiple radio emission sources, using the original value as the evaluation specification value
Radar identification device with an identification table stored in
hand, In the above identification table, the above-mentioned multiple specifications
Based on one or more specifications based on degree
Divided into groups, each of these groups This is
Of the above-mentioned evaluation specifications for the
Set so that the above radio emission sources can be identified by the set
Storing the evaluated value corresponding to the above-mentioned evaluation value.
Characterized by Receives the values of multiple specifications of the received radio wave to be identified,
The values of these parameters and the corresponding evaluation parameters are
Match each loop, and based on the matching result
Evaluation value extraction that outputs the evaluation values stored in the identification table
Means, The evaluation values output by the evaluation value extracting means are sorted in the order of importance as described above.
Therefore, by evaluating each of the above groups,
Identification means for identifying a radio wave emitting source that has output a wave; plural The above evaluation valuesIs entered, The importance of the above specifications
One or more specifications as a group based on this
The above multipleRadio emission source
Grouping parameters, which are sets of evaluation
Grouping means for outputting a plurality of data for each group, and receiving the grouping data,
pluralRadio emission sourceOne fromRadio emission sourceCan identifyUp
Evaluation specificationsKey detection method that detects a key as an identification key
And a plurality of the plurality of groups for each of the groups based on the identification key.
Radio emission sourceOne fromRadio emission sourceSo that you can identify
Determine the weight for each evaluation specification value,The weightthe above
Evaluation value determinator to output to the above identification table as evaluation value
Step andWith The above-mentioned evaluation value extracting means is used for evaluating various important groups.
Perform the above matching for the original value, and
The source of the received radio wave cannot be identified by the identification means.
Of the next most important group,
And performing the above collation. Radar identification device. 4. A plurality of values of a plurality of radio wave emission sources are stored in advance as evaluation specification values, and a type of the radio wave emission source which has emitted the received radio wave is identified based on the evaluation specification values. In the radio wave emission source identification method, a part of the plurality of important evaluation parameters is compared with a corresponding value of the received radio wave, and the evaluation is performed based on the comparison result. A first evaluation step of outputting a value, a first identification step of identifying the received radio wave based on the evaluation value output by the first evaluation step, and outputting an identification result as an identification candidate when the identification is successful. And this first
When the identification is not possible in the identification step, the evaluation specification values not compared in the first step are compared with the values of the specification of the received radio wave corresponding to these evaluation specification values. A second evaluation step of outputting an evaluation value based on the result; and identifying the received radio wave based on the evaluation value output by the second evaluation step. If identification is successful, the identification result is output as an identification candidate. And a second identification step.