JPH0312269B2 - - Google Patents
Info
- Publication number
- JPH0312269B2 JPH0312269B2 JP60038177A JP3817785A JPH0312269B2 JP H0312269 B2 JPH0312269 B2 JP H0312269B2 JP 60038177 A JP60038177 A JP 60038177A JP 3817785 A JP3817785 A JP 3817785A JP H0312269 B2 JPH0312269 B2 JP H0312269B2
- Authority
- JP
- Japan
- Prior art keywords
- target
- mode
- height measurement
- azimuth
- switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/46—Indirect determination of position data
- G01S13/48—Indirect determination of position data using multiple beams at emission or reception
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、電子的にビームを走査するレーダ
装置に係るもので特に捜索と測高から成る３次元
レーダ機能を同一アンテナにもたせるレーダ装置
に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a radar device that electronically scans a beam, and particularly relates to a radar device that has three-dimensional radar functions consisting of search and height measurement on the same antenna. It is something.
第３図，第４図及び第５図は、従来のレーダ装
置の系統図、及び動作機能を説明するための図、
及びビーム走査の例を示す図であり、図において
１はビーム走査計算機、２はアレイアンテナ、３
はレーダ送信機、４は送受切換器、５は受信機、
６はPPI指示器、７はRHI指示器、８は信号処理
器、９は方位カーサ、１０は垂直ビーム幅が広い
ビーム、１１はペンシルビームである。
3, 4 and 5 are diagrams for explaining the system diagram and operational functions of conventional radar equipment,
and a diagram showing an example of beam scanning, in which 1 is a beam scanning calculator, 2 is an array antenna, and 3 is a diagram showing an example of beam scanning.
is a radar transmitter, 4 is a transmitter/receiver switch, 5 is a receiver,
6 is a PPI indicator, 7 is an RHI indicator, 8 is a signal processor, 9 is an azimuth cursor, 10 is a beam with a wide vertical beam width, and 11 is a pencil beam.
従来のレーダ装置は上記のように構成され、ビ
ーム走査計算機１は最初、捜索モードになつてい
て、垂直ビーム幅が広いビーム１０を生成する様
にアレイアンテナ２の各アレイ素子に移相量を与
え、かつ、このビームを360゜全周にわたつて走査
する。同時にビーム走査計算機１のトリガ信号に
同期して、レーダ送信機３が駆動され、レーダ信
号が生成されて、送受切換器４を経てアレイアン
テナ２より空中に放射される。一方このレーダ信
号の反射波は、アレイアンテナ２で捕捉され、送
受切換器４を経て受信機５に入力される。この受
信機５の出力は、例えばPPI指示器６に入力され
表示が行なわれるとともに信号処理器８に入力さ
れる。いま、このPPI上の目標の高度情報を知る
には、例えば第４図に示すように高度情報を知り
たいとする目標T1上に方位カーサ９を指定し、
この目標の方位情報をビーム走査計算機１に供給
するか、あるいは、信号処理機８によつて自動的
に目標を判定させ、この目標の方位情報をビーム
走査計算機１に供給する。ビーム走査計算機１は
かかる情報を得ると、捜索モードと測高モードの
機能を同時に行うように作動する。即ち第４図及
び第５図に示すように、方位カーサ９から所定の
角度βだけ手前の点からβ1，β2……と示すごと
く、一定送信パルスヒツト数たとえば４回毎に１
回は捜索モードを測高モードに切換え、またペン
シルビーム１１を発生する様にアレイアンテナ２
に移相量を与えて、目標の方位にビームが向くよ
うにビーム走査計算機１を作動させる。また、測
高モードの繰り返し毎にビームの仰角を変化さ
せ、垂直方向にビームを走査する。従つてこのよ
うな動作にもとづいて、測高モード時の受信出力
をRHI指示器に入力することで目標の高度情報
を得ることができる。 A conventional radar device is configured as described above, and the beam scanning computer 1 is initially in search mode and applies a phase shift amount to each array element of the array antenna 2 so as to generate a beam 10 with a wide vertical beam width. This beam is then scanned over the entire 360° circumference. At the same time, the radar transmitter 3 is driven in synchronization with the trigger signal of the beam scanning computer 1, and a radar signal is generated and radiated into the air from the array antenna 2 via the transmitter/receiver switch 4. On the other hand, the reflected wave of this radar signal is captured by the array antenna 2 and input to the receiver 5 via the transmitter/receiver switch 4. The output of the receiver 5 is input to, for example, a PPI indicator 6 for display, and is also input to a signal processor 8. Now, in order to know the altitude information of the target on this PPI, for example, as shown in Fig. 4, specify the azimuth cursor 9 on the target T1 for which you want to know the altitude information,
This target azimuth information is supplied to the beam scanning computer 1, or the signal processor 8 automatically determines the target and supplies this target azimuth information to the beam scanning computer 1. When the beam scanning computer 1 obtains such information, it operates to simultaneously perform the functions of the search mode and the height measurement mode. That is, as shown in FIGS. 4 and 5, from a point a predetermined angle β in front of the azimuth cursor 9, β 1 , β 2 .
At this time, the search mode was changed to the height measurement mode, and the array antenna 2 was set to generate the pencil beam 11.
The beam scanning computer 1 is operated so that the beam is directed to the target direction by giving a phase shift amount to the target direction. Furthermore, the elevation angle of the beam is changed every time the height measurement mode is repeated, and the beam is scanned in the vertical direction. Therefore, based on this operation, target altitude information can be obtained by inputting the reception output in the height measurement mode to the RHI indicator.
上記のような従来のレーダ装置では、一定送信
パルスヒツト数毎に捜索モードと測高モードを切
換えるため、１つの目標のレーダ反射信号が、捜
索モードにおける、垂直ビーム幅が広いビーム１
０の複数個で受信されるような目標、たとえば第
２図に示した目標T2のあつた場合、その複数点
の途中であつても、パルスセツト数によつて測高
モードに切り換わつてしまう場合があり、このと
き、PPI指示器６に対して受信機５から入力され
る目標信号は中断され、測高モードでの動作終了
後、再び入力される。このため、目標が一つであ
つてもPPI指示器６上には、測高モード時に必要
な処理時間だけ時間的にはなれた２つの信号が入
力されることになり、目標が一つであるにもかか
わらず、２つ以上の目標として表示されてしまう
という問題点があつた。
In the conventional radar device as described above, since the search mode and the height measurement mode are switched every fixed number of transmitted pulse hits, the radar reflection signal of one target is transmitted to beam 1 with a wide vertical beam width in the search mode.
If there is a target that is received at multiple points of 0, for example target T2 shown in Figure 2, even if it is in the middle of the multiple points, it will switch to height measurement mode depending on the number of pulse sets. In this case, the target signal input from the receiver 5 to the PPI indicator 6 is interrupted, and is input again after the operation in the height measurement mode is completed. Therefore, even if there is only one target, two signals are input to the PPI indicator 6 that are separated in time by the processing time required in the height measurement mode. Despite this, there was a problem that more than one goal was displayed.
この発明は、このような問題点を解消するため
になされたものであつて、１つの目標のレーダ反
射信号が、垂直ビーム幅が広いビーム１０の複数
個で受信される場合にも、表示上で複数の目標と
して表示されることのないようなレーダ装置を与
えることを目的とする。 The present invention has been made to solve such problems, and even when a radar reflection signal from one target is received by a plurality of beams 10 having a wide vertical beam width, the display does not change. The aim is to give such a radar device that it will not appear as multiple targets.
この発明のレーダ装置は、捜索モード時に、目
標の捕捉処理が終了しているか否かを判定する手
段と、目標の方位を指定する指定手段を組み合
せ、捜索モードでの処理と、測高モードでの処理
の競合を防ぐような切換手段を実現するものであ
る。
The radar device of the present invention combines means for determining whether target acquisition processing has been completed during search mode and designation means for specifying the direction of the target. This is to realize a switching means that prevents processing conflicts.
この発明においては、目標の捕捉処理が終了し
ているか否かを判定する手段により、目標の捕捉
処理中か否かを検出し、捕捉処理中であつた場合
には、目標方位を指定する指定手段からの方位情
報を保留させ、捕捉処理終了後に、これを有効に
することにより、目標捕捉処理が、測高モードの
処理によつて中断されることをふせぎ単一の目標
を、２つ以上の目標として表示することがないよ
うにするものである。
In this invention, the means for determining whether or not the target acquisition process has been completed detects whether or not the target acquisition process is in progress, and if the target acquisition process is in progress, the designation for specifying the target direction is provided. By suspending the azimuth information from the device and enabling it after the acquisition process is completed, the target acquisition process is prevented from being interrupted by the height measurement mode process, and a single target can be used for two or more This is to prevent it from being displayed as a goal.
第１図は、この発明の一実施例を示す系統図で
あり、１〜８は、上記従来の装置と全く同一のも
のである。１２は目標の捕捉処理を実行中か否か
を判定する目標判定器、１３は、捜索モードと測
高モードの処理の競合を防ぐためのモード切換器
である。
FIG. 1 is a system diagram showing one embodiment of the present invention, and numerals 1 to 8 are completely the same as the conventional apparatus described above. Reference numeral 12 designates a target determination device that determines whether or not target acquisition processing is being executed, and reference numeral 13 designates a mode switching device that prevents conflict between search mode and height measurement mode processing.
上記のように構成されたレーダ装置において
は、目標上に方位カーサ９を指定した場合、この
目標の方位情報は、モード切換器１３に入力され
る。一方、捜索処理による目標情報は、目標判定
器１２に入力され、この目標判定器１２は、捕捉
処理を実行中か否かを判定し、結果をモード切換
器１３に入力する。モード切換器１３は、捕捉処
理を実行中の場合には、前記目標情報を保持し、
捕捉処理の終了したことが目標判定器１２によつ
て判定され、捕捉終了情報が入力されると、保持
していた目標情報をビーム走査計算機１に供給す
る。これにより、上記従来装置の場合と同様に捜
索モードと測高モードの切り換えによる処理が開
始されるが、本発明によるレーダ装置において
は、上記切り換え処理の実行中に、捜索処理によ
る目標が検出された場合、目標判定器１２は、捕
捉処理が実行中であるむねの情報をモード切換器
１３に入力し、切換器１３は、これが入力された
場合、測高モードへの切換を禁止するための信号
をビーム走査計算機１に出力する。これにより、
捜索モードの処理が引きつづいて実行され、捕捉
処理が完了するまで、測高モードへの切換は行な
われず、捕捉処理完了後目標判定器１２が、捕捉
処理完了情報を切換器１３に入力することによ
り、モード切換器１３は測高モードへの切換を禁
止するための情報を解除することにより、ビーム
処理計算機１は、測高モードと捜索モードの切換
を再開する。 In the radar device configured as described above, when the azimuth cursor 9 is designated on a target, the azimuth information of this target is input to the mode switch 13. On the other hand, the target information from the search process is input to the target determiner 12, which determines whether or not the acquisition process is being executed, and inputs the result to the mode switch 13. The mode switch 13 holds the target information when the capture process is being executed,
When the target determiner 12 determines that the acquisition process has been completed and inputs acquisition completion information, the held target information is supplied to the beam scanning computer 1. As a result, the process of switching between the search mode and the height measurement mode is started in the same way as in the case of the conventional device, but in the radar device according to the present invention, the target is detected by the search process while the above switching process is being executed. In this case, the target determiner 12 inputs the information of the body in which the acquisition process is being executed to the mode switch 13, and when this is input, the switch 13 inputs the information to prohibit switching to the height measurement mode. The signal is output to the beam scanning computer 1. This results in
The search mode process continues to be executed, and the switching to the height measurement mode is not performed until the acquisition process is completed, and after the acquisition process is completed, the target determiner 12 inputs acquisition process completion information to the switch 13. As a result, the mode switch 13 cancels the information for prohibiting switching to the height measurement mode, and the beam processing computer 1 resumes switching between the height measurement mode and the search mode.
第２図は、本発明でのビーム走査の例を示す図
であり、例えば、測高モードと捜索モードが切り
換えられている場合、捜索モードのパルスヒツト
数P3において目標T2Bが検出された場合には、
測高モードへの切換は禁止され、以後P7まで捜
索処理が行なわれる。P7において目標捕捉処理
が終了すると、測高モードへの切換が行なわれて
いる。このようにすることにより、捕捉目標の目
標信号は中断されずにPPI指示器６に入力され、
従つて、１目標を複数目標として表示することは
ない。 FIG. 2 is a diagram showing an example of beam scanning in the present invention. For example, when the height measurement mode and the search mode are switched, the target T 2 B is detected at the number of pulse hits P 3 in the search mode. in case of,
Switching to height measurement mode is prohibited, and search processing continues until P7 . When the target acquisition process ends at P7 , a switch to the height measurement mode is performed. By doing this, the target signal of the acquired target is input to the PPI indicator 6 without interruption,
Therefore, one target is not displayed as multiple targets.
以上のように、この発明によれば、捜索モード
と測高モードの切換えに際して、目標を捕捉中か
否かの判定を行いこれを用いて切換を制御するこ
とにより、単一目標を複数目標として誤つて表示
することなく、常に正しい目標情報を得ることが
できる。
As described above, according to the present invention, when switching between the search mode and the height measurement mode, it is determined whether or not the target is being captured, and this is used to control the switching, thereby converting a single target into multiple targets. Correct target information can always be obtained without displaying it incorrectly.
第１図は、この発明の一実施例を示す図、第２
図は、本発明でのビーム走査の例を示す図、第３
図は、従来のレーダの系統図、第４図は、従来の
レーダの動作機能を説明するための図、第５図は
ビーム走査の例を示す図であり、図中１はビーム
走査計算機、２はアレイアンテナ、３はレーダ送
信機、４は送受切換器、５は受信機、６はPPI指
示器、７はRHI指示器、８は信号処理器、９は
方位カーサ、１０は垂直ビーム幅が広いビーム、
１１はペンシルビーム、１２は目標判定器、１３
はモード切換器である。なお、各図中同一符号
は、同一または相当部分を示す。
FIG. 1 is a diagram showing one embodiment of the present invention, and FIG.
Figure 3 shows an example of beam scanning in the present invention.
The figure is a system diagram of a conventional radar, FIG. 4 is a diagram for explaining the operational functions of a conventional radar, and FIG. 5 is a diagram showing an example of beam scanning. In the figure, 1 is a beam scanning computer, 2 is an array antenna, 3 is a radar transmitter, 4 is a transmitter/receiver switch, 5 is a receiver, 6 is a PPI indicator, 7 is an RHI indicator, 8 is a signal processor, 9 is an azimuth cursor, 10 is a vertical beam width has a wide beam,
11 is a pencil beam, 12 is a target determiner, 13
is a mode switch. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
定のビーム指向角度ごとにデジタル的に移相量を
与えることによつてビーム走査するレーダ装置に
おいて、捜索モード時には水平方向に狭く垂直方
向に広いビームを形成して方位方向にビームを走
査し、目標を捕捉する捕捉手段と、該手段で捕捉
された目標の方位を指定する指定手段と、測高モ
ード時には、水平、垂直共にほぼ等しい幅のビー
ムを形成して、前記指定手段で指定される目標の
方位方向にビームを指向せしめ、かつビームを垂
直方向に走査して前記指定される目標の高度又は
仰角を測定する測高手段と、捜索モード時に目標
の捕捉処理を実行中か否かを判定する判定手段
と、前記指定手段による目標方位の指定及び、前
記捕捉処理判定手段による判定を組み合せること
によつて、捜索モードでの処理と、測高モードの
処理が競合することをふせぐように、捜索モード
を測高モードに切換える切換手段をもつことを特
徴とするレーダ装置。1. In a radar device that scans a beam by digitally giving a phase shift amount for each predetermined beam direction angle to multiple elements constituting an array antenna, in search mode, the beam is narrow in the horizontal direction and wide in the vertical direction. a capturing means for forming and scanning a beam in the azimuth direction to capture the target; a specifying means for specifying the azimuth of the target captured by the means; and a beam of approximately equal width both horizontally and vertically in the height measurement mode. a height measuring means for directing a beam in the azimuth direction of the target specified by the specifying means and scanning the beam in a vertical direction to measure the altitude or elevation angle of the specified target; Processing in search mode and measurement can be performed by combining a determining means for determining whether target acquisition processing is being executed, designation of the target direction by the specifying means, and determination by the acquisition processing determining means. A radar device characterized by having a switching means for switching a search mode to a height measurement mode so as to prevent processing in a high mode from competing with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60038177A JPS61196183A (en) | 1985-02-27 | 1985-02-27 | Radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60038177A JPS61196183A (en) | 1985-02-27 | 1985-02-27 | Radar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61196183A JPS61196183A (en) | 1986-08-30 |
| JPH0312269B2 true JPH0312269B2 (en) | 1991-02-19 |
Family
ID=12518104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60038177A Granted JPS61196183A (en) | 1985-02-27 | 1985-02-27 | Radar |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61196183A (en) |
-
1985
- 1985-02-27 JP JP60038177A patent/JPS61196183A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61196183A (en) | 1986-08-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |