JPS63184087A - Superheterodyne type secondary radar receiver - Google Patents
Superheterodyne type secondary radar receiverInfo
- Publication number
- JPS63184087A JPS63184087A JP1653487A JP1653487A JPS63184087A JP S63184087 A JPS63184087 A JP S63184087A JP 1653487 A JP1653487 A JP 1653487A JP 1653487 A JP1653487 A JP 1653487A JP S63184087 A JPS63184087 A JP S63184087A
- Authority
- JP
- Japan
- Prior art keywords
- transponders
- noise amplifiers
- low noise
- antenna
- agc circuits
- 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
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、スーパーヘテロダイン式二次レーダ受信装置
、特に、既知数のトランスポンダーに対して時分割に情
報の送受信を行うスーパヘトロゲイン式二次レーダ受信
装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a superheterodyne type secondary radar receiving device, particularly a superhetrogain type secondary radar receiving device that transmits and receives information to and from a known number of transponders in a time-division manner. The present invention relates to a radar receiving device.
従来のスーパーヘテロダイン式二次レーダ受信装置は例
えば、第３図に示す高周波信号ｆを第２図に示すアンテ
ナ１から入力し低雑音増幅器３で増幅し、局部発振器６
で屈カと混合器７で周波数変換し、中間周波増幅器８で
増幅し、復調器１゜で出力を得ている。A conventional superheterodyne type secondary radar receiving device, for example, inputs the high frequency signal f shown in FIG. 3 from the antenna 1 shown in FIG.
The frequency is converted by a mixer 7, amplified by an intermediate frequency amplifier 8, and an output is obtained by a demodulator 1°.
ここで、中間周波増幅器８の出力に接続されたＡＧＣ回
路９は、低雑音増幅器３および中間周波増幅器８の利得
を制御している。Here, the AGC circuit 9 connected to the output of the intermediate frequency amplifier 8 controls the gains of the low noise amplifier 3 and the intermediate frequency amplifier 8.
しかしながら、このような上述した従来のスーパーヘテ
ロダイン式二次レーダ受信装置は、トランスポンダーと
の間の距離が離散的なために、レベルが大きく変動する
高周波信号を受信する場合は、ＡＧＣ回路の時定数が変
動周期に比べて太きいので入力信号に追従できず信号が
飽和あるいは欠落することがあるという欠点がある。However, since the above-mentioned conventional superheterodyne secondary radar receiving device has a discrete distance from the transponder, when receiving a high frequency signal whose level fluctuates greatly, the time constant of the AGC circuit Since it is thicker than the fluctuation period, it has the disadvantage that it cannot follow the input signal and the signal may be saturated or dropped.
本発明のスーパーヘテロダイン式二次レーダ受信装置は
、ＡＧＣ回路を各々の低雑音増幅器のそれぞれに設け、
情報を送受信するトランスポンダーの数だけこれらの対
を有し、受信するタイミングで切替器を切替え、周波数
変換、中間周波増幅及び復調することによシ、各々の低
雑音増幅器の入力レベルが大きく変動しないので、ＡＧ
Ｃ回路の時定数が大きくても正常に受信できる機能を有
して構成される。The superheterodyne secondary radar receiving device of the present invention includes an AGC circuit provided in each low-noise amplifier,
There are as many pairs of these transponders as there are transponders that transmit and receive information, and the input level of each low-noise amplifier does not fluctuate greatly by switching the switch at the timing of reception, frequency conversion, intermediate frequency amplification, and demodulation. Therefore, A.G.
It is configured to have a function that allows normal reception even if the time constant of the C circuit is large.
次に、本発明の実施例について、図面を参照して説明す
る。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示すプロ、り図である。FIG. 1 is a diagram showing an embodiment of the present invention.
第１図に示すスーパーヘテロダイン式二次レーダ受信装
置は、アンテナ１と、切替器２，５と、低雑音増幅器３
−１．３−２．〜，３−Ｎと、ＡＧＣ回路４−１．４−
２．〜，４−Ｎ、９と、混合器６と、局部発振器７と、
中間周波増幅器８と、復調器１゜とを含んで構成される
。The superheterodyne secondary radar receiving device shown in FIG.
-1.3-2. ~, 3-N and AGC circuit 4-1.4-
2. ~, 4-N, 9, mixer 6, local oscillator 7,
The device includes an intermediate frequency amplifier 8 and a demodulator 1°.
ここで、アンテナ１よシ入った第３図に示すような高周
波信号ｆは、送信したトランスポンダーに対応する低雑
音増幅器３−１．３−２．〜，３−Ｎに入力されるよう
に切替器２で選択され、それぞれ対応するＡＧＣ回路４
−１．４−２．〜，４−Ｎで利得を制御されて増幅され
切替器５を通シ、周波数変換、中間周波増幅され、復調
される。Here, the high frequency signal f as shown in FIG. 3 entering the antenna 1 is transmitted to the low noise amplifiers 3-1, 3-2, . ~, 3-N are selected by the switch 2, and the corresponding AGC circuits 4
-1.4-2. .
本発明の、スーパーヘテロダイン式二次レーダ受信装置
は、低雑音増幅器をＩ送受信を行なうトランスポンダー
の数だけ備え、トランスポンダーが送信するタイミング
で、対応するＡＧＣ回路付低雑音増幅器が受信するよう
に切替器を制御することによシ、トランスポンダーとの
間の距離が離散的でレベルが大きく変動する高周波信号
でも、飽和又は欠落することなく受信できるという効果
がある。The superheterodyne secondary radar receiving device of the present invention is equipped with as many low-noise amplifiers as there are transponders that perform I transmission and reception, and a switch is installed so that the corresponding low-noise amplifier with an AGC circuit receives the signal at the timing when the transponder transmits. By controlling this, even high-frequency signals whose distance from the transponder is discrete and whose level fluctuates greatly can be received without saturation or dropouts.
第１図は本発明の一実施例を示すブロック図、第２図は
本発明および従来のスーパーヘテロダイン式二次レーダ
受信装置が受信する高周波信号の信号レベル波形図、第
３図は従来の一例を示すブロック図である。
１・・・・・・アンテナ、２，５・・・・・・切替器、
３．３−１゜３−２．〜，３−Ｎ・・・・・・低雑音増
幅器、４−１．４−２、〜，４−Ｎ、９・・・・・・Ａ
ＧＣ回路、６・・・・・・混合器、７・・・・・・局部
発振器、８・・・・・・中間周波増幅器、１０・・・・
・・復調器、FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a signal level waveform diagram of a high frequency signal received by the present invention and a conventional superheterodyne type secondary radar receiving device, and FIG. 3 is an example of a conventional example. FIG. 1... Antenna, 2, 5... Switcher,
3.3-1゜3-2. ~, 3-N...Low noise amplifier, 4-1.4-2, ~, 4-N, 9...A
GC circuit, 6...Mixer, 7...Local oscillator, 8...Intermediate frequency amplifier, 10...
... demodulator,
Claims (1)
するためのアンテナと、前記トランスポンダのそれぞれ
に対応して設けられ対応するトランスポンダからの高周
波信号を増幅するための複数の低雑音増幅器と、対応し
て設けられた前記低雑音増幅器の利得を制御するための
複数のＡＧＣ回路と、前記トランスポンダが送信するタ
イミングで対応する低雑音増幅器が受信するように前記
高周波信号の供給を切り替える切替器とを含むことを特
徴とするスーパーヘテロダイン式二次レーダ受信装置。an antenna for receiving high-frequency signals transmitted from a plurality of transponders; a plurality of low-noise amplifiers provided correspondingly to each of the transponders for amplifying the high-frequency signals from the corresponding transponders; a plurality of AGC circuits for controlling the gains of the low-noise amplifiers, and a switch that switches the supply of the high-frequency signal so that the corresponding low-noise amplifier receives it at the timing at which the transponder transmits the high-frequency signal. Features a superheterodyne secondary radar receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653487A JPS63184087A (en) | 1987-01-26 | 1987-01-26 | Superheterodyne type secondary radar receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1653487A JPS63184087A (en) | 1987-01-26 | 1987-01-26 | Superheterodyne type secondary radar receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63184087A true JPS63184087A (en) | 1988-07-29 |
Family
ID=11918931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1653487A Pending JPS63184087A (en) | 1987-01-26 | 1987-01-26 | Superheterodyne type secondary radar receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63184087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258425A (en) * | 1992-07-22 | 1994-09-16 | Hughes Aircraft Co | System and method for decision and tracking of position of transmitter-receiver |
-
1987
- 1987-01-26 JP JP1653487A patent/JPS63184087A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258425A (en) * | 1992-07-22 | 1994-09-16 | Hughes Aircraft Co | System and method for decision and tracking of position of transmitter-receiver |
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