JPH052093U - Monopulse radar device - Google Patents
Monopulse radar deviceInfo
- Publication number
- JPH052093U JPH052093U JP2058391U JP2058391U JPH052093U JP H052093 U JPH052093 U JP H052093U JP 2058391 U JP2058391 U JP 2058391U JP 2058391 U JP2058391 U JP 2058391U JP H052093 U JPH052093 U JP H052093U
- Authority
- JP
- Japan
- Prior art keywords
- agc
- signal
- output
- circuit
- difference
- 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
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- Radar Systems Or Details Thereof (AREA)
Abstract
(57)【要約】 (修正有)
【目的】 広帯域にわたり各信号系間の利得差をなく
す。
【構成】 1周期のレーダ計測に必要な時間以外の空き
時間に、発振器14からの基準信号は、レーダ信号とレ
ベルを合わせるAGC減衰器15、基準信号を各ミキサ
プリアンプへ入力するタイミングを作るゲート発生器1
6とゲート回路17、各信号系へ基準信号を入力する加
算器18,19,20を径て各信号系のミキサプリアン
プ2,3,4に入力され、それぞれAGCアンプ5,
6,7を通り、検波回路8,10,12に達する。検波
回路8の出力はAGC回路9,11,13に、検波回路
10,12の出力はそれぞれAGC回路11,13に入
力される。和のAGC回路9の出力は和のAGCアンプ
5にそのまゝ帰還されるが、差のAGC回路11,13
の出力は検出したAGC信号を加算するAGC電圧用加
算器21,22により、AGC回路9の出力と加算さ
れ、それぞれ差のAGCアンプ6,7に帰還される。
(57) [Summary] (Modified) [Purpose] To eliminate the gain difference between signal systems over a wide band. [Structure] An AGC attenuator 15 for adjusting the level of a reference signal from an oscillator 14 to a radar signal in a free time other than the time required for one cycle of radar measurement, and a gate for creating a timing for inputting the reference signal to each mixer preamplifier. Generator 1
6, a gate circuit 17, and adders 18, 19 and 20 for inputting reference signals to the respective signal systems are input to the mixer preamplifiers 2, 3 and 4 of the respective signal systems, and the AGC amplifiers 5 and 5, respectively.
It passes through 6 and 7 and reaches the detection circuits 8, 10 and 12. The outputs of the detection circuit 8 are input to the AGC circuits 9, 11, 13 and the outputs of the detection circuits 10, 12 are input to the AGC circuits 11, 13, respectively. The output of the sum AGC circuit 9 is fed back to the sum AGC amplifier 5 as it is, but the difference AGC circuits 11 and 13 are used.
The output of is added to the output of the AGC circuit 9 by the AGC voltage adders 21 and 22 for adding the detected AGC signal, and is fed back to the difference AGC amplifiers 6 and 7, respectively.
Description
【0001】[0001]
この考案は、例えば検出しようとする目標に対して電磁波を放射し反射してき た電磁波を受信し、その受信信号から必要情報を抽出し目標を捕捉・追尾するた めのレーダ装置、特にモノパルスレーダ装置に関するものである。 This invention is, for example, a radar device for radiating and reflecting an electromagnetic wave to a target to be detected, extracting necessary information from the received signal, and capturing and tracking the target, particularly a monopulse radar device. It is about.
【0002】[0002]
図3は従来のモノパルス受信機のブロック図であり、図において1はモノパル スアンテナ、2は和信号用ミキサプリアンプ、3と4は差信号用ミキサプリアン プ、5は和信号用AGCアンプ、6と7は差信号用AGCアンプ、8は和信号用 検波回路、9は5と6と7へAGC電圧を与えるAGC回路である。 FIG. 3 is a block diagram of a conventional monopulse receiver. In the figure, 1 is a monopulse antenna, 2 is a mixer preamplifier for sum signals, 3 and 4 are mixer preamps for difference signals, 5 is an AGC amplifier for sum signals, and 6 Reference numerals 7 and 7 are difference signal AGC amplifiers, reference numeral 8 is a sum signal detection circuit, and reference numeral 9 is an AGC circuit for applying AGC voltage to 5 and 6 and 7.
【0003】 従来のモノパルス受信機は前記の様に、5和信号用AGCアンプ出力信号を8 和信号用検波回路で検波しその出力レベルを一定とするよう9和信号用AGC回 路がAGC電圧を5和信号用AGCアンプへ出力する。またその電圧は6、7差 信号用AGCアンプへも出力し、和、差信号の利得の整合を行っていた。As described above, the conventional monopulse receiver detects the AGC amplifier output signal for the 5 sum signal by the 8 sum signal detection circuit and keeps the output level constant so that the 9 sum signal AGC circuit has the AGC voltage. Is output to the AGC amplifier for 5 sum signal. The voltage was also output to the AGC amplifier for 6 and 7 difference signals to match the gains of the sum and difference signals.
【0004】[0004]
従来のモノパルス受信機では、5和信号用AGCアンプの入力に対し、出力が 一定となるようAGC電圧が制御され、そのAGC電圧が6と7差信号用AGC アンプへも出力されるが、2、3、4のミキサプリアンプは周波数特性のバラツ キにより利得が一定でない。 そのため各周波数においてほぼ同一の利得が得られるよう2と3と4のミキサ プリアンプはマッチドペアとして調整され使用することとなる。 In the conventional monopulse receiver, the AGC voltage is controlled so that the output is constant with respect to the input of the 5 sum signal AGC amplifier, and the AGC voltage is also output to the 6 and 7 difference signal AGC amplifiers. The gains of the mixer preamplifiers 3 and 4 are not constant due to variations in frequency characteristics. Therefore, the mixer preamplifiers 2, 3, and 4 are adjusted and used as a matched pair so that almost the same gain can be obtained at each frequency.
【0005】 この考案は基準信号を各信号系に入力し、各信号系の利得差を検出してAGC 電圧に加算するフィードバックループを形成することにより広帯域にわたり各信 号系間の利得差をなくすことを目的とする。This invention eliminates the gain difference between signal systems over a wide band by inputting a reference signal to each signal system, forming a feedback loop that detects the gain difference of each signal system and adds it to the AGC voltage. The purpose is to
【0006】[0006]
この考案に係るモノパルス受信機は従来の回路に発振器とAGC減衰器とゲー ト発生器とゲート回路と検波回路とAGC回路により構成され、広帯域にわたり 各信号系の利得差を補正する為のフィードバックループを付加したものである。 The monopulse receiver according to the present invention comprises a conventional circuit including an oscillator, an AGC attenuator, a gate generator, a gate circuit, a detection circuit and an AGC circuit, and a feedback loop for correcting the gain difference of each signal system over a wide band. Is added.
【0007】[0007]
この考案においては、各信号系へ基準信号を与えることにより各信号系間の利 得差を検出し、利得差に応じた電圧をAGC電圧へ加算し各信号系間の利得差を なくす。 In the present invention, a reference signal is applied to each signal system to detect a gain difference between the signal systems, and a voltage corresponding to the gain difference is added to the AGC voltage to eliminate the gain difference between the signal systems.
【0008】[0008]
実施例1. 図1はこの考案の実施例を示す図であり1〜9は上記従来装置と全く同一のも のである。10と12は差信号用の検波回路であり8と同一である。11と13 は差信号用のAGC回路であり、8和信号用検波回路から出力される基準信号の 検波出力と10、12差信号用検波回路から出力される基準信号の検波出力を比 較しその差をAGC電圧として出力し、9和信号用AGC回路出力のAGC電圧 と加算し、6、7差信号用アンプへ与えることにより6、7差信号用アンプの利 得を5和信号用アンプの利得と同一となるよう制御する。14は基準信号を発生 させる発振器であり、その出力は15AGC減衰器に入る。 AGC減衰器は5和信号用AGCアンプとAGC電圧対利得の逆の特性を持つ ものであり出力は現在5和信号用AGCアンプへ入力されているレーダ信号とほ ぼ同一レベルとなる様に調整することにより広対帯域に安定したループ利得を確 保する。 16ゲート発生器は基準信号を2、3、4ミキサプリアンプへ入力するタイミ ングを作るものであり、そのゲート出力は11、13差信号用AGC回路と17 ゲート回路へ与えられ、17ゲート回路は許されたタイミングでレーダ信号とほ ぼ同一出力レベルとなった基準信号を出力する。またその出力は、18、19、 20の加算器により各ミキサプリアンプへ入力される。 21、22はAGC電圧の加算器である。 図2はレーダ信号と基準信号のタイミングを表したものであり、レーダの1周 期のうちレーダ信号用として使用しない範囲を使用して基準信号を各ミキサプリ アンプへ入力し、その検波出力をゲート発生器の出力により取り出し和信号出力 と差信号出力を比較する。 Example 1. FIG. 1 is a diagram showing an embodiment of the present invention, and 1 to 9 are exactly the same as the above-mentioned conventional device. Reference numerals 10 and 12 are detection circuits for difference signals, which are the same as 8. Reference numerals 11 and 13 are AGC circuits for the difference signal, and compare the detection output of the reference signal output from the detection circuit for the 8 sum signal with the detection output of the reference signal output from the detection circuit for the 10 and 12 difference signals. The difference is output as an AGC voltage, the AGC voltage of the AGC circuit output for the 9 sum signal is added, and the result is given to the 6 and 7 difference signal amplifier. The gain is controlled to be the same as the gain. Reference numeral 14 is an oscillator for generating a reference signal, and its output enters a 15AGC attenuator. The AGC attenuator has the inverse characteristics of the AGC amplifier for 5 sum signals and the AGC voltage vs. gain, and the output is adjusted to be at almost the same level as the radar signal currently input to the AGC amplifier for 5 sum signals. By doing so, a stable loop gain is secured in a wide band. The 16-gate generator makes a timing for inputting the reference signal to the 2, 3, and 4 mixer preamplifiers, and its gate output is given to the AGC circuit for 11 and 13 difference signals and the 17-gate circuit. It outputs the reference signal that has almost the same output level as the radar signal at the permitted timing. The output of the mixer is input to each mixer preamplifier by the adders 18, 19, 20. Reference numerals 21 and 22 are AGC voltage adders. Figure 2 shows the timing of the radar signal and the reference signal. The reference signal is input to each mixer preamplifier using the range not used for the radar signal in one cycle of the radar, and the detection output is gated. The output of the generator compares the output of the sum signal and the output of the difference signal.
【0009】[0009]
以上のように、この考案によれば基準信号による差信号のフィードバックルー プによりほぼ完全に広帯域にわたり各信号間の利得を同一とすることができ、モ ノパルス受信機としての性能向上が得られ、更に各信号系のマッチドペアとして の調整が不必要となる。 As described above, according to the present invention, the feedback loop of the difference signal by the reference signal allows the gain between the signals to be substantially the same over a wide band, and the performance as a monopulse receiver can be improved. Furthermore, it is not necessary to adjust each signal system as a matched pair.
【図1】この考案のモノパルスレーダ装置を示す図であ
る。FIG. 1 is a diagram showing a monopulse radar device of the present invention.
【図2】この考案のモノパルスレーダ装置のタイミング
を示す図。FIG. 2 is a diagram showing the timing of the monopulse radar device of the present invention.
【図3】従来のモノパルスレーダ装置を示す図である。FIG. 3 is a diagram showing a conventional monopulse radar device.
【符号の説明】 1 モノパルスアンテナ 2 和信号用ミキサプリアンプ 3 差信号用ミキサプリアンプ 4 差信号用ミキサプリアンプ 5 和信号用AGCアンプ 6 差信号用AGCアンプ 7 差信号用AGCアンプ 8 和信号用検波回路 9 和信号用AGC回路 10 差信号用検波回路 11 差信号用AGC回路 12 差信号用検波回路 13 差信号用AGC回路 14 発振器 15 AGC減衰器 16 ゲート発生器 17 ゲート回路 18 〜 20 加算器 21、22 AGC電圧用加算器[Description of symbols] 1 monopulse antenna 2 sum signal mixer preamplifier 3 difference signal mixer preamplifier 4 difference signal mixer preamplifier 5 sum signal AGC amplifier 6 difference signal AGC amplifier 7 difference signal AGC amplifier 8 sum signal detection circuit 9 AGC circuit for sum signal 10 Detection circuit for difference signal 11 AGC circuit for difference signal 12 Detection circuit for difference signal 13 AGC circuit for difference signal 14 Oscillator 15 AGC attenuator 16 Gate generator 17 Gate circuits 18 to 20 Adder 21, 22 AGC voltage adder
Claims (1)
出力レベルを制御するAGC減衰器と、AGC減衰器に
より調整された基準信号を出力し、タイミングを作るゲ
ート発生器と、ゲート発生器のタイミング信号により基
準信号を出力するゲート回路と、ゲート回路より出力さ
れた信号を各信号系へ加算する複数の加算器と、その信
号を受ける複数のミキサプリアンプと、その出力を増幅
する複数のAGCアンプと、AGCアンプの利得を制御
するために信号を検波する複数の検波回路と、検波回路
から出力された信号をうけるAGC回路と、和AGC回
路出力と差AGC回路出力を加算するAGC用加算器と
で構成されるモノパルスレーダ装置。Claims for utility model registration: 1. An oscillator for generating a reference signal, an AGC attenuator for controlling the output level of the oscillator, and a gate for producing a timing by outputting a reference signal adjusted by the AGC attenuator. A generator, a gate circuit that outputs a reference signal according to the timing signal of the gate generator, a plurality of adders that add the signals output from the gate circuit to each signal system, and a plurality of mixer preamplifiers that receive the signals, A plurality of AGC amplifiers for amplifying the outputs, a plurality of detection circuits for detecting signals for controlling the gain of the AGC amplifiers, an AGC circuit for receiving the signals output from the detection circuits, a sum AGC circuit output and a difference AGC A monopulse radar device including an AGC adder that adds circuit outputs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2058391U JPH052093U (en) | 1991-04-01 | 1991-04-01 | Monopulse radar device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2058391U JPH052093U (en) | 1991-04-01 | 1991-04-01 | Monopulse radar device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH052093U true JPH052093U (en) | 1993-01-14 |
Family
ID=12031245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2058391U Pending JPH052093U (en) | 1991-04-01 | 1991-04-01 | Monopulse radar device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH052093U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003215237A (en) * | 2002-01-18 | 2003-07-30 | Mitsubishi Electric Corp | Angle measurement radar |
JP2006126221A (en) * | 2006-02-08 | 2006-05-18 | Mitsubishi Electric Corp | Angle measuring radar device |
-
1991
- 1991-04-01 JP JP2058391U patent/JPH052093U/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003215237A (en) * | 2002-01-18 | 2003-07-30 | Mitsubishi Electric Corp | Angle measurement radar |
JP2006126221A (en) * | 2006-02-08 | 2006-05-18 | Mitsubishi Electric Corp | Angle measuring radar device |
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