JPH0415584A - Trigger circuit - Google Patents
Trigger circuitInfo
- Publication number
- JPH0415584A JPH0415584A JP12029090A JP12029090A JPH0415584A JP H0415584 A JPH0415584 A JP H0415584A JP 12029090 A JP12029090 A JP 12029090A JP 12029090 A JP12029090 A JP 12029090A JP H0415584 A JPH0415584 A JP H0415584A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- trigger
- directional antenna
- video
- antenna
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野１
本発明は）・リカ回路に関り、’ｌ￥に無指向性アンチ
−Ｊ・ど指向性７：／ ｊ″′Ｊを備え、無指向性アン
テナで受信した信号でトリカを発生し、指向性アンテナ
で受信した信号をＡ ／ Ｄ変換しノごティジタルデー
７夕にもとづいて電波到来方向を知る電波探知装置６′
においてｌ・リカを発生すイ、１・・リカ回路に関する
。[Detailed Description of the Invention] [Industrial Application Field 1] The present invention relates to a rectifier circuit, which is equipped with an omnidirectional anti-J and an omnidirectional 7:/j″′J in A radio wave detection device 6' generates a signal from the signal received by the directional antenna, A/D converts the signal received by the directional antenna, and determines the direction of arrival of the radio wave based on the digital data.
The present invention relates to a circuit that generates l.
〔従来の技術］１
従来、この種の電波探知装置は、第２図に示すように、
無指向性アンテナ２で受信した信−弓を検波器３で検波
してビデオと１７、さらにこのビデオにもとづいて１へ
リカを発生したＡ／Ｄ変換器７１−一〜７−ｎに供給す
る。[Prior Art] 1 Conventionally, this type of radio wave detection device, as shown in Fig. 2,
The signal received by the omnidirectional antenna 2 is detected by the detector 3 and supplied to the video 17, and further to the A/D converters 71-1 to 7-n which generate the helical signal based on this video. .
複数の指向性アンテナ１．−１・へ−１−１−１は、マ
ルヂヒームアンテナを構成ｉ〜、それぞれのアンデナ出
勾は検波器３−１−＝ ３− ｒｉで検波され、１イ延
回路６−１−６− ｎを経てＡ ／ Ｉ）変換？に７１
−７１１に供給されてディジタルデータσ）振幅データ
となる。検波器３から出力されるｌ・リガは、ノ＼ ′
■）変換器７−１−・−７−１ｌにお（）るＡ、７・川
−）変換の際のトリカとして供給される。遅延回路６−
１．′６１１はＡ、 、、、、、ｙ Ｄ変換器７−１〜
７−ｎに入力されるトリカ信号をタイミングを合わせる
為に受信信号をトリカ信シづが入力ずイ１まての時間遅
延させる。Multiple directional antennas1. -1.to -1-1-1 constitutes a multi-heem antenna i~, the gradient of each antenna is detected by a detector 3-1-=3-ri, and a 1-i extension circuit 6-1- 6- A/I) conversion via n? to 71
-711 and becomes digital data σ) amplitude data. The l signal output from the detector 3 is ＼ ′
(2) It is supplied as a trigger during the A, 7, river-) conversion to the converters 7-1- and -7-1l. Delay circuit 6-
1. '611 is A, , , , y D converter 7-1 ~
In order to match the timing of the trigger signal input to 7-n, the received signal is delayed by the time until the trigger signal is input.
電波到来方位は、こうして得られるｎ個の振幅ケ・−夕
にもとついて決定される。The radio wave arrival direction is determined based on the n amplitude values thus obtained.
上述した従来の電波探知装置は、無指向性アンテナによ
りＩ−リカを検出する方式を採っており、最小受信レベ
ルか無指向性アンテナにより決まってしまうので、指向
性アンテナで受信していても検出できないという欠点が
ある。また、指向性アンテナのメインローフ以外、ある
いは所定受信範囲外からの到来電波ｆ１−ζシＪについ
ても無指向性アンテナで受信した場合は、指向性アンテ
ナのＡ 、、／ Ｄ変換器にトリカかかか）で１７まう
のて振幅チー７りを出力１．方位：；シ（差０）要因と
なるという欠点かある。The conventional radio wave detection device described above uses a method of detecting I-Rica using an omnidirectional antenna, and since the minimum reception level is determined by the omnidirectional antenna, it cannot be detected even if it is received with a directional antenna. The drawback is that it cannot be done. Also, if the omnidirectional antenna receives an incoming radio wave f1-ζ from other than the main loaf of the directional antenna or from outside the predetermined reception range, the directional antenna's A,.../D converter receives a signal. 17) and outputs an amplitude of 7. There is a drawback that it becomes a factor of direction: ;shi (difference 0).
課題を解決−づるため１１７）手段〕
本発明の回路は 到来電波を無指向性アンテナによっで
受信してトリカを発生させ、このＩ・リガ（１３二よっ
て指向性アンテナで・受信した信号をＡ 、、／ Ｄ変
換したデトジタルデ・−夕にもとづいて電波到来方向を
探知する電波探知装置にあって前記１・・リカを発生ず
るトリカ回路において、前記無指向性アンテナて受信し
た信号を検波し、てビデオとした第１の信号と無記指向
性アンテナで受信した信号を検波してビデオとした第１
の信号と無記指向性アンテナで受信１７た信号を検波し
てビデオとしまた第２の信号とを比較し前記第２の信号
か大なる場合にのみ前記トリガを発生ずる手段を備えて
構成される。117) Means for Solving the Problems] The circuit of the present invention receives incoming radio waves with an omnidirectional antenna, generates a trigger, and converts the signal received by the directional antenna into a signal. In a radio wave detection device that detects the direction of arrival of radio waves based on digital data that has been converted to A,.../D, the signal received by the omnidirectional antenna is detected in the detector circuit that generates the signal. , the first signal is converted into a video by detecting the signal received by the unmarked directional antenna, and the first signal is converted into a video by detecting the signal received by the unmarked directional antenna.
and means for detecting the signal received by the unmarked directional antenna and converting it into a video, comparing the signal with a second signal and generating the trigger only when the second signal is larger. Ru.
また、本発明の回路は、面記指向性アンデナが、所定の
受信範囲にわた−）で所定の方位ステップてマルチビー
ムを形成する複数のアンテナとした構成を有する。Further, the circuit of the present invention has a configuration in which the surface directional antenna is a plurality of antennas that form multi-beams in steps in a predetermined direction over a predetermined reception range.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例の構成図であり、マルチビー
ムを形成する複数の指向性アンテナ１１〜１−ｎと、検
波器３−１〜３−［ｌと、遅延回路６−１〜６−ｒｌと
、Ａ／Ｄ変換器７−１〜７ｒ）、および無指向性アンテ
ナ２と、検波器３と、本発明に直接かかわるトリガ８か
ら成り、１ヘリ力回路８はまた、比較回路４とトリ力発
生回路５から成る。FIG. 1 is a block diagram of an embodiment of the present invention, which includes a plurality of directional antennas 11 to 1-n forming multi-beams, detectors 3-1 to 3-[l, and a delay circuit 6-1. 6-rl, A/D converters 7-1 to 7r), an omnidirectional antenna 2, a detector 3, and a trigger 8 directly related to the present invention. It consists of a circuit 4 and a tri-force generating circuit 5.
次に、第１図の実施例の動作について説明す仁
指向性アンテア１−１〜１− ｎ及び無指向性アンテ
ナ２は到来電波を受信する。この受信信号はそれぞれ検
波器３−１−３− ｎおよび３によってそれぞれビデオ
信号となる。Next, the operation of the embodiment shown in FIG. 1 will be explained.The directional antennas 1-1 to 1-n and the omnidirectional antenna 2 receive incoming radio waves. These received signals are converted into video signals by detectors 3-1-3-n and 3, respectively.
比較回路は、検波器３と検波器３−１・−３−ｎからの
イハ号を比較しぞ６・）結果を１−リガ発生器５へ出力
する。トリカ発生器５は、指向性アンテナ１１− ｌ−
ｎからビデオ信号のほうか無指向性アンテナ２からのビ
デオ信号より大きい場合に１・り力信号を発生しＡ／Ｄ
変換器７−１〜・７−ｎへ入力する。遅延回路６−］、
］〜６−１は、Ａ ／ Ｉ）変換器７−１− ／ ７−
ｎへ入力されるトリガ信号とタイミングを合わせる為
に受信信号をトリガ信号が入力されるまでの時間だけ遅
延させる。Ａ−７Ｄ変換器７−１〜７−ｎは、トリカ信
号によって受信信号をＡ 、／ Ｄ変換し、振幅データ
を出力する。このようにして無指向性アンテリーと指向
性アンテナからビデオ信号を検出し、トリカ回路に入力
しＡ／Ｄ変換器７のトリガ信号とすることにより、第３
図（ａ）に示す如く、無指向性アンテナの利得レベル１
０より指向性アンテナの利得レベル９の高い分だけ低い
レベルの到来電波でも検出することかてきる。また第３
図（ｂ ）の如く、所定受信範囲外ではマルチビームン
“ンテナの利得レベル１１よりも無指向性アン−７−す
の利得レベル１０のはうか検出レベルが高い為、（へリ
ガ信弓を発生しないのて、所定受信範囲外のブランキン
グを行っことかてきる１、
１発明の効果、１
以ト説明した、Ｊこうに本発明は、無指向性アンテナと
指向性アンテナからビデオ信号を検出して比較し、指向
性アンテナで得られるビデオ信号が大きい場合にの、；
’／、 ）−リカを発生ずる３二どＣ４二。しり、し゛
チオレベルの低い到来電波を検出するとともにメインロ
ーブ外及び所定受信範囲外のブランキングができる効果
がある７、
性アンテナ、３，３−１・−３−ｎ・・検波器、／１・
・比較回路、５・・トリガ発生回路、６−１・〜６−１
１・遅延回路、７−１・〜７ ■１・・Ａ／Ｄ変換器
、８トリ力回路、９・・指向性アンテナの利マｕレベル
、１０・・・無指向性アンテナの利得レベル、１１・・
・マルチヒーノ＼アンデナの利得レベル。The comparison circuit compares the I/H signals from the wave detector 3 and the wave detectors 3-1 and -3-n and outputs the result to the 1-Riga generator 5. The trigger generator 5 is a directional antenna 11-l-
If the video signal from n is larger than the video signal from omnidirectional antenna 2, a 1-force signal is generated and the A/D
Input to converters 7-1 to 7-n. delay circuit 6-],
]~6-1 is A/I) converter 7-1-/7-
In order to match the timing with the trigger signal input to n, the received signal is delayed by the time until the trigger signal is input. The A-7D converters 7-1 to 7-n perform A/D conversion on the received signal using the trigger signal and output amplitude data. In this way, the video signal is detected from the omnidirectional antenna and the directional antenna, and is input to the trigger circuit and used as a trigger signal for the A/D converter 7.
As shown in Figure (a), the gain level of the omnidirectional antenna is 1.
It is possible to detect even incoming radio waves of a lower level by the amount that the gain level 9 of the directional antenna is higher than 0. Also the third
As shown in Figure (b), outside the predetermined reception range, the detection level of the omnidirectional antenna is much higher than the gain level of 11 of the multi-beam antenna. 1. Effects of the Invention 1. As explained above, the present invention can receive video signals from omnidirectional antennas and directional antennas. Detect and compare if the video signal obtained by the directional antenna is large;
'/, ) - 32nd C42 which generates Rika. This antenna has the effect of detecting incoming radio waves with low threshold and threshold levels and blanking outside the main lobe and outside the predetermined reception range7.・
・Comparison circuit, 5...Trigger generation circuit, 6-1...6-1
1. Delay circuit, 7-1.~7 ■1.. A/D converter, 8-triangle circuit, 9.. Gain level of directional antenna, 10.. Gain level of omnidirectional antenna, 11...
・Marchino\Andena gain level.
Claims (1)
ガを発生させ、このトリガによって指向性アンテナで受
信した信号をＡ／Ｄ変換したディジタルデータにもとづ
いて電波到来方向を探知する電波探知装置にあって前記
トリガを発生するトリガ回路において、前記無指向性ア
ンテナで受信した信号を検波してビデオとした第１の信
号と無記指向性アンテナで受信した信号を検波してビデ
オとした第１の信号と無記指向性アンテナで受信した信
号を検波してビデオとした第２の信号とを比較し前記第
２の信号が大なる場合にのみ前記トリガを発生する手段
を備えて成ることを特徴とするトリガ回路。 ２、前記指向性アンテナが、所定の受信範囲にわたって
所定の方位ステップでマルチビームを形成する複数のア
ンテナとして構成したものであることを特徴とする請求
項１記載のトリガ回路。[Claims] 1. An incoming radio wave is received by an omnidirectional antenna to generate a trigger, and the direction of arrival of the radio wave is detected based on digital data obtained by A/D converting the signal received by the directional antenna by this trigger. In a trigger circuit that generates the trigger in a radio wave detection device that detects a signal received by the omnidirectional antenna, a first signal is detected as a video, and a signal received by the non-directional antenna is detected. means for comparing a first signal as a video and a second signal as a video obtained by detecting a signal received by an unmarked directional antenna and generating the trigger only when the second signal is larger; A trigger circuit comprising: 2. The trigger circuit according to claim 1, wherein the directional antenna is configured as a plurality of antennas that form multi-beams at predetermined azimuth steps over a predetermined receiving range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12029090A JPH0415584A (en) | 1990-05-10 | 1990-05-10 | Trigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12029090A JPH0415584A (en) | 1990-05-10 | 1990-05-10 | Trigger circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0415584A true JPH0415584A (en) | 1992-01-20 |
Family
ID=14782584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12029090A Pending JPH0415584A (en) | 1990-05-10 | 1990-05-10 | Trigger circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0415584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5381444A (en) * | 1991-10-31 | 1995-01-10 | Fujitsu Limited | Radio environment measuring system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5514389A (en) * | 1978-07-03 | 1980-01-31 | Ace Controls | Shock absorber |
| JPS61284683A (en) * | 1985-06-12 | 1986-12-15 | Mitsubishi Electric Corp | Radar equipment |
| JPH01223371A (en) * | 1988-03-03 | 1989-09-06 | Nec Corp | Bearing measuring apparatus |
-
1990
- 1990-05-10 JP JP12029090A patent/JPH0415584A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5514389A (en) * | 1978-07-03 | 1980-01-31 | Ace Controls | Shock absorber |
| JPS61284683A (en) * | 1985-06-12 | 1986-12-15 | Mitsubishi Electric Corp | Radar equipment |
| JPH01223371A (en) * | 1988-03-03 | 1989-09-06 | Nec Corp | Bearing measuring apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5381444A (en) * | 1991-10-31 | 1995-01-10 | Fujitsu Limited | Radio environment measuring system |
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