JPS5970984A - Moving target radar equipment - Google Patents
Moving target radar equipmentInfo
- Publication number
- JPS5970984A JPS5970984A JP57180674A JP18067482A JPS5970984A JP S5970984 A JPS5970984 A JP S5970984A JP 57180674 A JP57180674 A JP 57180674A JP 18067482 A JP18067482 A JP 18067482A JP S5970984 A JPS5970984 A JP S5970984A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- speed compensation
- mixer
- self
- coho
- 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
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
- G01S13/50—Systems of measurement based on relative movement of target
- G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
- G01S13/60—Velocity or trajectory determination systems; Sense-of-movement determination systems wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
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)
Abstract
Description
【発明の詳細な説明】
この発明は、自速補償を必要とする移動目標レーダ装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a moving target radar apparatus that requires self-speed compensation.
°まず、従来の移動目標レーダを第１図を参照して説明
する。第１図において、（１）は混合器、（２）は中間
周波増幅器、（３）は自速補償用混合器、（４）はドツ
プラ検出混合器、（５）は自速補償制御信号発生器。First, a conventional moving target radar will be explained with reference to FIG. In Figure 1, (1) is a mixer, (2) is an intermediate frequency amplifier, (3) is a mixer for self-speed compensation, (4) is a Doppler detection mixer, and (5) is a self-speed compensation control signal generator. vessel.
（６）は電圧制御型水晶発振器、（７）はＣｏ）（Ｏ信
号発生器である。第１図と共にその動作を説明すると。(6) is a voltage controlled crystal oscillator, and (7) is a Co)(O signal generator).The operation thereof will be explained with reference to FIG.
入力されたレーダ受信信号（Ｆ′＋：ｆ□±ｆ。）が混
合器（１）により第１中間周波信号（ｆＩＦｉ±ｆｄ：
Ｉ：ｆｏ）に変換さハウ間周波増幅器（２）により増幅
される。The input radar reception signal (F'+:f□±f.) is converted into a first intermediate frequency signal (fIFi±fd:
I:fo) and amplified by the Howe frequency amplifier (2).
又、その信号はレーダ装置自身の速度を補償する為に、
自速補償制御信号発生器（５）及び電圧制御型水晶発振
器（６）で発生しだ自速補償用信号（ｆｏ±ｆｏ）によ
シ自速補償用混合器（３）で混合され、第２中間周波信
号（ｆＩＦ２±ｆｃ１）となりＣ！ＯＨＯ信号発生器（
７）でつくられたＣ０ＨＯ信号と再びドツプラ検出用混
合器（４）で混合されドラグラビデオ信号となる。そし
てこの信号はドツプラを有する移動目標だけを検出する
移動目標信号処理装置へ送られる。In addition, the signal is used to compensate for the speed of the radar device itself.
The self-speed compensation signal (fo±fo) generated by the self-speed compensation control signal generator (5) and the voltage-controlled crystal oscillator (6) is mixed in the self-speed compensation mixer (3), and the second 2 intermediate frequency signal (fIF2±fc1) becomes C! OHO signal generator (
The C0HO signal created in step 7) is mixed again in the Doppler detection mixer (4) to form a dragura video signal. This signal is then sent to a moving target signal processing device that detects only moving targets with Doppler.
従来この種のレーダ装置において、第１中間周波信号か
ら自速補償をする為に第２中間周波信号が必要であり一
般に第１中間周波信号より周波数の低い値としていた。Conventionally, in this type of radar device, a second intermediate frequency signal is required to perform self-speed compensation from the first intermediate frequency signal, and generally has a lower frequency than the first intermediate frequency signal.
これはパルスレーダの場合第２中間周波信号以外をカッ
トするフィルタの影響でパルス波形がなｉ５ｓ／Ｎを劣
化させる原因となっていた。In the case of a pulse radar, this causes the pulse waveform to deteriorate due to the influence of the filter that cuts off signals other than the second intermediate frequency signal, thereby deteriorating the i5s/N.
この発明は、上述の従来装置の欠点を解決したもので、
その特徴はｃｏｎｏ信号に自速補償を加えレーダ受信信
号自体に直接自速補償を加えないことにある。This invention solves the above-mentioned drawbacks of the conventional device.
Its feature is that it applies self-speed compensation to the cono signal and does not directly add self-speed compensation to the radar received signal itself.
以下第２図を用いてこの発明の詳細な説明する。The present invention will be described in detail below with reference to FIG.
第２図において（１）〜（７）は従来の装置と同様であ
る。従来の装置と同様に混合器（１）により中間周波信
号（ｆＩＦ±ｄ±ｆｏ）に変換され、中間周波増幅器（
２）によシ増幅された受信信号は、自速補償制御信号発
生器（５）と電圧制御型水晶発振器（６）とで発生した
自速補償用信号（ｆ０±ｆｏ）と、 Ｃ０ＨＯ信号発
生器（７）より発生した０ＯＨＯ信号（ｆエアーｆ０）
とを自速補償用混合器（３）で混合した。自速補償付の
第２ Ｃ！ＯＨＯ信号でドツプラ検出混合器（４）によ
ｐ混合し、ドラグラビデオ信号となる。これは連続波で
ある自速補償用信号（ｆ０±ｆ。）と連続波である００
Ｉ（０個号を自速補償用混合器（３）で混合しても両方
が連続波である為スプリアスを十分おさえるフィルタを
挿入することが出来、従って従来の装置の様な受信信号
自体のＳ／Ｎを劣化させることがない５又、受信チャン
ネルがｎチャンネルあるレーダ装置（例えば３チヤン洋
ルモノパルスレーダ装置の場合に、従来の装置であると
自速補償用混合器（３）（第２中間周波信号用）がｎ個
必要となるが、この発明は自速補償用混合器（３）が１
個で済むことから、前述した従来の欠点をとシ除くほか
小型、軽量化を図ることができる６In FIG. 2, (1) to (7) are similar to the conventional device. Similar to the conventional device, the mixer (1) converts the signal into an intermediate frequency signal (fIF±d±fo), which is then sent to the intermediate frequency amplifier (
2) The amplified received signal is the self-speed compensation signal (f0±fo) generated by the self-speed compensation control signal generator (5) and the voltage-controlled crystal oscillator (6), and the C0HO signal generation. 0OHO signal (f air f0) generated from the device (7)
and were mixed in a self-speed compensation mixer (3). 2nd C with self-speed compensation! The OHO signal is mixed by a Doppler detection mixer (4) to become a drag video signal. This is a continuous wave self-speed compensation signal (f0±f.) and a continuous wave 00
Even if I (0) is mixed in the self-speed compensation mixer (3), since both waves are continuous waves, a filter can be inserted to sufficiently suppress spurious waves. In the case of a radar device with five or n receiving channels (for example, a three-channel Western monopulse radar device) that does not degrade the S/N, the conventional device uses a self-speed compensation mixer (3) (the third channel). 2 for intermediate frequency signals), but in this invention, only 1 self-speed compensation mixer (3) is required.
Since only one piece is required, it is possible to eliminate the drawbacks of the conventional technology mentioned above and also to reduce the size and weight of the device6.
第１図は従来の移動目標レーダ装置に使われている受信
機の一実施例を示すブロック図、第２図はこの発明の一
実施例を示すブロック図であシ。
（１）は混合器、（２）は中間周波増幅器、（３）は自
速補償用混合器、（４）はドツプラ検出混合器、（５）
は自速補償制御信号発生器、（６）は電圧制御型水晶発
掘器。
（７）はＣ０ＨＯ信号発生器である。
なお図中、同一あるいは相当部分には同一符号を付して
示しである。
代理人 葛野信−FIG. 1 is a block diagram showing an embodiment of a receiver used in a conventional moving target radar device, and FIG. 2 is a block diagram showing an embodiment of the present invention. (1) is a mixer, (2) is an intermediate frequency amplifier, (3) is a self-speed compensation mixer, (4) is a Doppler detection mixer, (5)
(6) is a self-speed compensation control signal generator, and (6) is a voltage-controlled crystal excavator. (7) is a C0HO signal generator. In the drawings, the same or corresponding parts are designated by the same reference numerals. Agent Makoto Kuzuno
Claims (1)
速補償制御発生器と電圧制御型水晶発振器とで発生した
自速補償用信号と、 Ｃ４Ｈ６信号発生器で発生しだ
０ＯＨＯ信号を自速補償用混合器で混合し、この混合に
よって得られた第２００ＨＯ信号をドツプラ検出混合器
の局部信号としたことを特徴とした移動目標レーダ装置
。In a moving target radar device having a self-speed compensation function, a self-speed compensation signal generated by a self-speed compensation control generator and a voltage-controlled crystal oscillator, and a 0OHO signal generated by a C4H6 signal generator are used for self-speed compensation. A moving target radar device characterized in that the 200th HO signal obtained by mixing in a mixer is used as a local signal of a Doppler detection mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180674A JPS5970984A (en) | 1982-10-15 | 1982-10-15 | Moving target radar equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57180674A JPS5970984A (en) | 1982-10-15 | 1982-10-15 | Moving target radar equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5970984A true JPS5970984A (en) | 1984-04-21 |
Family
ID=16087321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57180674A Pending JPS5970984A (en) | 1982-10-15 | 1982-10-15 | Moving target radar equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5970984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62123379A (en) * | 1985-11-22 | 1987-06-04 | Honda Motor Co Ltd | Doppler radar |
| JPH01314984A (en) * | 1988-06-16 | 1989-12-20 | Mitsubishi Electric Corp | Radar |
-
1982
- 1982-10-15 JP JP57180674A patent/JPS5970984A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62123379A (en) * | 1985-11-22 | 1987-06-04 | Honda Motor Co Ltd | Doppler radar |
| JPH01314984A (en) * | 1988-06-16 | 1989-12-20 | Mitsubishi Electric Corp | Radar |
| JPH0569473B2 (en) * | 1988-06-16 | 1993-10-01 | Mitsubishi Electric Corp |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO154777B (en) | RADAR SYSTEM. | |
| GB599549A (en) | Improvements in high-frequency radio relay stations | |
| JPS5970984A (en) | Moving target radar equipment | |
| US3165738A (en) | Moving target indicating radar system | |
| JPS61165677A (en) | Pulse radar apparatus | |
| JP3230022B2 (en) | MTI radar device | |
| JPH01314984A (en) | Radar | |
| US3195128A (en) | Moving target indicating systems | |
| GB802008A (en) | Improvements in or relating to frequency stabilisation of continuous wave radar systems | |
| JP2001091644A (en) | Pulse doppler radar device and clutter suppressing method for this radar device | |
| JP2603737B2 (en) | Radar equipment | |
| JPS6030901B2 (en) | radio wave transmitter | |
| JP2581770B2 (en) | Radar equipment | |
| JPS63247682A (en) | Tracking radar | |
| US3199102A (en) | Fm doppler radar navigation system | |
| JPH05281344A (en) | Unnecessary signal suppressing radar equipment | |
| JPS6082988A (en) | Pulse radar device | |
| JPH045031Y2 (en) | ||
| JPH04265882A (en) | Fm-cw radar device | |
| JP2634280B2 (en) | Radar equipment | |
| JPS61240181A (en) | Fm radar system | |
| JPS63158487A (en) | Airborne radar equipment | |
| JPS59162469A (en) | Radar equipment | |
| JPH0712929A (en) | Fm-cw radar | |
| JPH03180791A (en) | Cw radar |