JPS5919497B2 - Radiated power telemetry method for time division multiple access carriers - Google Patents
Radiated power telemetry method for time division multiple access carriersInfo
- Publication number
- JPS5919497B2 JPS5919497B2 JP53024646A JP2464678A JPS5919497B2 JP S5919497 B2 JPS5919497 B2 JP S5919497B2 JP 53024646 A JP53024646 A JP 53024646A JP 2464678 A JP2464678 A JP 2464678A JP S5919497 B2 JPS5919497 B2 JP S5919497B2
- Authority
- JP
- Japan
- Prior art keywords
- carrier wave
- station
- radiated power
- multiple access
- division multiple
- 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
Links
- 238000000034 method Methods 0.000 title claims description 6
- 239000000969 carrier Substances 0.000 title claims 2
- 238000004891 communication Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 1
Landscapes
- Radio Relay Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Description
【発明の詳細な説明】
本発明は衛星通信方式に使用される時分割多元接続（以
下「ＴＤＭＡ」という）通信方式に於いて各地球局から
送信されるＴＤＭＡ搬送波の放射電力（以下「ＥＩＲＰ
」という）を測定する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the radiated power (hereinafter referred to as "EIRP") of TDMA carrier waves transmitted from each earth station in a time division multiple access (hereinafter referred to as "TDMA") communication system used in a satellite communication system.
”).
ＴＤＭＡ通信方式では各地球局からバースト状の搬送波
が送信され、これが衛星により中継されるため受信局に
於いてその搬送波のＥＩＲＰを測定するためには特殊な
装置を必要とする。In the TDMA communication system, a burst carrier wave is transmitted from each earth station and relayed by a satellite, so a special device is required to measure the EIRP of the carrier wave at the receiving station.
特にＴＤＭＡ通信方式の遠隔集中監視においては各地５
球局から搬送波ＥＩＲＰの測定結果を別情報として集
収するのではなく、受信された信号から直接かつ自動的
に測定する方法が望まれている。本発明は、自局の送信
搬送波ＥＩＲＰは検波器、サンプルホルダー、電圧計等
を用いてかなり正確１０に測定でき、しかもＴＤＭＡ通
信方式では自局の送信信号が衛星により中継された信号
を受信することができるので、受信された自局の送信信
号と各地球局からの送信信号のＥＩＲＰを相対的に測定
することに着目したものである。１５本発明の目的は、
ＴＤＭＡ通信方式に於いて各地球局の送信する搬送波Ｅ
ＩＲＰを直接的にかつ簡易に測定する方法であつて、自
動測定を行うことのできる方法を提供することにある。Especially in remote centralized monitoring of TDMA communication system,
Instead of collecting the measurement results of the carrier wave EIRP from the ball station as separate information, a method is desired that directly and automatically measures the carrier wave EIRP from the received signal. In the present invention, the transmitting carrier wave EIRP of the own station can be measured to a fairly accurate 10 using a detector, a sample holder, a voltmeter, etc., and furthermore, in the TDMA communication system, the transmitting signal of the own station receives the signal relayed by the satellite. Therefore, we focused on relatively measuring the EIRP of the received transmission signal from our own station and the transmission signal from each earth station. 15 The purpose of the present invention is to
Carrier wave E transmitted by each earth station in TDMA communication system
It is an object of the present invention to provide a method for directly and easily measuring IRP, which is capable of automatic measurement.
本発明は、受信周波数変換器出力の信号を検出２０し、
自局の送信搬送波電力と各地球局からの送信搬送波電力
についてこれを比較し、そのＥＩＲＰ測定を行うことを
特徴とする。The present invention detects 20 the signal of the receive frequency converter output,
It is characterized by comparing the transmitted carrier wave power of its own station and the transmitted carrier wave power from each earth station, and performs EIRP measurement thereof.
以下実施例図面を用いて詳しく説明する。A detailed explanation will be given below using the drawings of the embodiment.
第１図は本発明実施例装置の要部を示すブロツ２５ ク
構成図である。FIG. 1 is a block diagram showing the main parts of an apparatus according to an embodiment of the present invention.
制御部１に与えられた変調信号はＰＳＫ変調器２によつ
てバースト状の搬送波を位相変調する。位相変調された
搬送波は送信周波数変換器３で送信周波数に変換され、
電力増幅器４に加えられる。この出力は方向性結合器５
を通３０り結合器６を介して空中線７から衛星に向けて
送出されるよう構成されている。一方衛星で中継された
自局又は他の地球局の信号は空中線Ｔで受信され、結合
器６を通り低雑音増幅器８で増幅される。A PSK modulator 2 phase-modulates a burst carrier wave using a modulation signal given to the control section 1 . The phase modulated carrier wave is converted to a transmission frequency by a transmission frequency converter 3,
It is added to the power amplifier 4. This output is the directional coupler 5
The signal is transmitted from the antenna 7 to the satellite via the coupler 6 through the antenna 30. On the other hand, a signal from the own station or another earth station relayed by a satellite is received by an antenna T, passes through a coupler 6, and is amplified by a low-noise amplifier 8.
この出力は受信周波数変３５換器９で周波数変換され、
方向性結合器１０を通ってＰＳＫ復調器１１に加えられ
る。ここで復調された信号は制御部１により公知のよう
に取り出される。ここで自局の送信信号は方向性結合器
５で分岐され、検波器１２で検波される。This output is frequency converted by a reception frequency converter 9,
It passes through a directional coupler 10 and is applied to a PSK demodulator 11 . The demodulated signal here is extracted by the control section 1 in a known manner. Here, the transmission signal of the own station is branched by a directional coupler 5 and detected by a detector 12.
この検波された電圧はサンプルホルダー１３によつて取
り出されている。このサンプルホルダー１３は送信搬送
波がバースト状であるため、搬送波が送信されている間
だけ検波電圧を検出し保持するよう構成されている。保
持された電圧は電圧計１４で計測される。一方受信信号
は方向性結合器１０で分岐され、検波器１５で検波され
る。This detected voltage is taken out by the sample holder 13. Since the transmitted carrier wave is burst-shaped, this sample holder 13 is configured to detect and hold the detected voltage only while the carrier wave is being transmitted. The held voltage is measured by a voltmeter 14. On the other hand, the received signal is branched by a directional coupler 10 and detected by a detector 15.
この検波された電圧はサンプルホルダー１６によつて取
り出されている。このサンプルホルダー１６は受信信号
が各地球局から送信されたバースト状信号の連続である
ため着目した局からの信号を受信した時に制御部１の制
御によつてその検波電圧を標本化し保持するよう構成さ
れている。保持された電圧は電圧計１７で計測される。
この電圧計１７の計測値と前述の電圧計１４の計測値は
プロセツサ１８に与えられて処理されるように構成され
ている。This detected voltage is taken out by the sample holder 16. Since the received signal is a series of burst signals transmitted from each earth station, this sample holder 16 is configured to sample and hold the detected voltage under the control of the control unit 1 when receiving a signal from a station of interest. It is configured. The held voltage is measured by a voltmeter 17.
The measured value of this voltmeter 17 and the above-mentioned measured value of the voltmeter 14 are provided to a processor 18 for processing.
この様な装置で、各地球局の送信搬送波ＥＩＲＰを測定
するには、先ず自局の送信搬送波ＥＩＲＰＰＯを電圧計
１４により測定して、これをプロセツサ１８により記憶
しておく。In order to measure the transmitted carrier wave EIRP of each earth station with such a device, first the transmitted carrier wave EIRPPO of the own station is measured by the voltmeter 14, and this is stored by the processor 18.
尚電圧計１４の電圧とＰＯとの関係は下式による。次い
で自局の送信搬送波が衛星で中継された信号を受信し、
その信号を検波器１５、サンプルホルダー１６で検出し
、その電圧ＶＯを電圧計１７で計測してこれをプロセツ
サ１８に記憶する。The relationship between the voltage of the voltmeter 14 and PO is based on the following formula. Next, the transmitted carrier wave of the own station receives the signal relayed by the satellite,
The signal is detected by a detector 15 and a sample holder 16, and the voltage VO is measured by a voltmeter 17 and stored in a processor 18.
次に、他の地球局の送信波について検波電圧Ｖｘを検波
器１５、サンプルホルダー１６、電圧計１７にて計測し
、これを前に記憶した自局の送信波についての値と比較
すればよい。即ち他の地球局の送信搬送波ＥＩＲＰＰｘ
はとして求めることができる。Next, the detected voltage Vx of the transmitted wave of another earth station is measured using the detector 15, the sample holder 16, and the voltmeter 17, and this is compared with the previously memorized value for the transmitted wave of the own station. . That is, the transmitted carrier wave EIRPPx of another earth station
can be found as
プロセツサ１８は制御部１の制御により各地球局からの
受信波について順次上記の測定及び演算を行うことによ
り、各地球局の送信搬送波ＥＩＲＰを求めることが出来
る。The processor 18 can determine the transmitted carrier wave EIRP of each earth station by sequentially performing the above measurements and calculations on the waves received from each earth station under the control of the control unit 1.
この結果は適宜公知の手段により表示され、あるいはＴ
ＤＭＡ通信方式の遠隔集中監視に使用することができる
。以上述べた様に本発明によればＴＤＭＡ通信方式にお
いて、各地球局の送信する搬送波のＥＩＲＰを直接自動
的に、かつ簡易に測定する方式が得られる。This result can be displayed by any known means or T
It can be used for remote centralized monitoring of DMA communication systems. As described above, according to the present invention, in a TDMA communication system, a system can be obtained that directly, automatically, and easily measures the EIRP of a carrier wave transmitted by each earth station.
これによりＴＤＭＡの遠隔集中監視に寄与するところ大
なるものがある。なお、上述の説明において自局及び各
地球局のＥＩＲＰについて全て制御部の制御により自動
的に行うよう述べたが、これらのうち一部又は全部を手
動により測定もしくは演算しても、同様に本発明を実施
することが出来る。This greatly contributes to remote centralized monitoring of TDMA. In the above explanation, it was stated that all EIRPs of the own station and each earth station are automatically performed under the control of the control unit, but even if some or all of them are manually measured or calculated, the same result will not be achieved. Able to carry out inventions.
第１図は本発明の方法による実施例装置の要部のプロツ
ク構成図である。
図において、１・・・・・・制御部、２・・・・・・Ｐ
ＳＫ変調器、３・・・・・・送信周波数変換器、４・・
・・・・電力増幅器、５・・・・・・方向性結合器、６
・・・・・・結合器、７・・・・・・空中線、８・・・
・・・低雑音増幅器、９・・・・・・受信周波数変換器
、１０・・・・・・方向性結合器、１１・・・・・・Ｐ
ＳＫ復調器、１２・・・・・・検波器、１３・・・・・
・サンプルホルダー１４・・・・・・電圧計、１５・・
・・・・検波器、１６・・・・・・サンプルホルダー
１７・・・・・・電圧計、１８・・・・・・プロセツサ
一である。FIG. 1 is a block diagram of the main parts of an embodiment of the apparatus according to the method of the present invention. In the figure, 1...control section, 2...P
SK modulator, 3... Transmission frequency converter, 4...
...Power amplifier, 5...Directional coupler, 6
...Coupler, 7...Antenna, 8...
...Low noise amplifier, 9...Reception frequency converter, 10...Directional coupler, 11...P
SK demodulator, 12...Detector, 13...
・Sample holder 14...Voltmeter, 15...
...Detector, 16...Sample holder
17...Voltmeter, 18...Processor.
Claims (1)
ら送信される搬送波の放射電力を測定する方法に於いて
、自局の送信する搬送波の放射電力を自局送信装置の出
力部で測定する第１のステップと、受信搬送波電力を受
信装置の出力部で測定する第２のステップと、各地球局
からの受信搬送波電力を自局の送信搬送波が中継されて
受信される受信搬送波電力に対して比較する第３のステ
ップと、前記第１および第３のステップの測定結果より
前記他の地球局から送信される搬送波の放射電力を演算
する第４のステップを有することを特徴とする時分割多
元接続搬送波の放射電力遠隔測定方法。1. In a method in which an earth station in a time division multiple access communication system measures the radiated power of a carrier wave transmitted from another earth station, the radiated power of the carrier wave transmitted by the own station is measured at the output section of the transmitter of the own station. a first step of measuring the received carrier wave power; a second step of measuring the received carrier wave power at the output section of the receiving device; and a fourth step of calculating the radiated power of the carrier wave transmitted from the other earth station from the measurement results of the first and third steps. A radiated power telemetry method for time division multiple access carriers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53024646A JPS5919497B2 (en) | 1978-03-03 | 1978-03-03 | Radiated power telemetry method for time division multiple access carriers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53024646A JPS5919497B2 (en) | 1978-03-03 | 1978-03-03 | Radiated power telemetry method for time division multiple access carriers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54116980A JPS54116980A (en) | 1979-09-11 |
| JPS5919497B2 true JPS5919497B2 (en) | 1984-05-07 |
Family
ID=12143894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53024646A Expired JPS5919497B2 (en) | 1978-03-03 | 1978-03-03 | Radiated power telemetry method for time division multiple access carriers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919497B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02305123A (en) * | 1989-05-19 | 1990-12-18 | Nec Eng Ltd | Supervisory and controlling system in satellite communication ground station |
-
1978
- 1978-03-03 JP JP53024646A patent/JPS5919497B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54116980A (en) | 1979-09-11 |
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