JPS6165179A - False signal generator - Google Patents
False signal generatorInfo
- Publication number
- JPS6165179A JPS6165179A JP59186070A JP18607084A JPS6165179A JP S6165179 A JPS6165179 A JP S6165179A JP 59186070 A JP59186070 A JP 59186070A JP 18607084 A JP18607084 A JP 18607084A JP S6165179 A JPS6165179 A JP S6165179A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- range
- frequency
- pseudo
- target
- 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.)
- Granted
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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/38—Jamming means, e.g. producing false echoes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、送信信号の周波数変化率が異なる複数の期
間で受信した目標信号の周波数分析を行って目標の測距
を行うＦＭレンジング方式のレーダ装置に擬似目標信号
を供給する擬似信号発生装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an FM ranging type radar that performs frequency analysis of a target signal received during a plurality of periods in which the frequency change rate of the transmitted signal is different to measure the range of the target. The present invention relates to a pseudo signal generator that supplies a pseudo target signal to a device.
従来の擬似信号発生装置について第１図及び第２図を用
いて説明する。A conventional pseudo signal generator will be explained with reference to FIGS. 1 and 2.
第１図はＦＭレンジングの原理を表わす図、第２図は従
来の擬似信号発生装置の構成を示す図であり１図中、（
１）は送信信号、（２）は受信信号、（３）は位相検波
信号、（４）は制御電圧発生器、（５）は電圧制御発振
器、（６）はミキサ、（７）はフィルタ、（８）は遅延
線である。Figure 1 is a diagram showing the principle of FM ranging, and Figure 2 is a diagram showing the configuration of a conventional pseudo signal generator.
1) is a transmitted signal, (2) is a received signal, (3) is a phase detection signal, (4) is a control voltage generator, (5) is a voltage controlled oscillator, (6) is a mixer, (7) is a filter, (8) is a delay line.
まず、ＦＭレンジングの原理を第１図を用いて説明する
。なお、説明の簡明化のため、送信信号（１）は周波数
変化率がゼロの区間１と周波数変化重力骨なる一定値の
区間２を周期的に繰シ返すものとする。したがって１区
間１における送信周波数はｆＱなる一定値になる。この
ような送信信号（１）を距離Ｒ２距離変化率にの目標に
放射すると、距離遅延時間Ｔ及びト°ッグラ周波数ｆ１
を受けた受信信号（２）が受信される。ここで、距離遅
延時間Ｔ及びドツプラ周波数で１はそれぞれ（１）式及
び（２）式で与えられる。First, the principle of FM ranging will be explained using FIG. In order to simplify the explanation, it is assumed that the transmission signal (1) periodically repeats an interval 1 in which the frequency change rate is zero and an interval 2 in which the frequency change rate is a constant value. Therefore, the transmission frequency in one section 1 is a constant value fQ. When such a transmission signal (1) is emitted to a target with a distance R2 and a distance change rate, the distance delay time T and the toggle frequency f1
The received signal (2) is received. Here, distance delay time T and Doppler frequency of 1 are given by equations (1) and (2), respectively.
Ｒ
Ｔ＝□ ・・・・・・・・・・・・・・・
（１）ただし、Ｃ：光速
次に、受信信号（２）を送信信号（１）を基準信号とし
て位相検波すると位相検波信号（３）が得られ、この位
相検波信号（３）の周波数が一定の区間３及び区間４に
おいて周波数分析を行うと、 ｆｌ及びｆｌなる周波
数を検出することができる。ここで２周波数ｆ２は
ｆ２＝ｆｊ −ｆＴ
であるため２次式を用いて目標距離Ｒが求められる。R T=□ ・・・・・・・・・・・・・・・
(1) However, C: the speed of light.Next, when the received signal (2) is phase detected using the transmitted signal (1) as a reference signal, a phase detected signal (3) is obtained, and the frequency of this phase detected signal (3) is constant. When frequency analysis is performed in sections 3 and 4, it is possible to detect frequencies fl and fl. Here, since the two frequencies f2 are f2=fj - fT, the target distance R is obtained using a quadratic equation.
Ｃ（ｆｌ−ｆｌ）
Ｒ＝−一一τ−−− ・・・・・・・・・・・・・・
・ （４１ｆ
したがって、このようなＦＭレンジング方式のレーダ装
置を試験する場合等に用いられる従来の擬似信号発生装
置の構成は第２図のようになる。C(fl-fl) R=-11τ--- ・・・・・・・・・・・・・・・
(41f) Therefore, the configuration of a conventional pseudo signal generator used for testing such an FM ranging type radar device is as shown in FIG.
第２図において、制御電圧発生器（４）は設定された擬
似目標の距離変化率孔を入力として電圧制御発振器（５
）の発振周波数が（２）式で与えられるドツプラ周波数
で１になる制御電圧ＶＣを発生する。ミキサ（６）では
上記レーダ装置から供給される送信信号（１）と電圧制
御発振器（５）の出力信号がミキシングされフィルタ（
７）に入力される。フィルタ（７）でミキシングによる
イメージ信号が除去された後、遅延線（８）に入力され
て擬似目標の距離几に相当する距離遅延時間Ｔが与えら
れ受信信号（２）と同一の擬似目標信号Ｓが得られる。In FIG. 2, the control voltage generator (4) inputs the distance change rate hole of the set pseudo target and generates a voltage control oscillator (5).
) generates a control voltage VC whose oscillation frequency becomes 1 at the Doppler frequency given by equation (2). The mixer (6) mixes the transmission signal (1) supplied from the radar device and the output signal of the voltage controlled oscillator (5) and filters it (
7). After the image signal due to mixing is removed by the filter (7), it is input to the delay line (8) and a distance delay time T corresponding to the range of the pseudo target is given, resulting in a pseudo target signal that is the same as the received signal (2). S is obtained.
このように、従来の擬似信号発生装置では遅延線で距離
遅延時間を与えているため擬似目標の距離を任意に、か
つ、遠距離に設定するには遅延線のハードウェアが増大
するという欠点があった。In this way, conventional pseudo signal generators use delay lines to provide distance delay time, so setting the distance of the pseudo target to an arbitrary and long distance requires an increase in the hardware required for the delay line. there were.
この発明は、レーダ装置の送信周波数変化率が変更され
るタイミングに同期し擬似目標の距離変化率及び距離に
応じたドップラ・オフセット信号を発生し、上記レーダ
装置から供給される送信信号とミキシングして擬似目標
信号を発生することにより、上記従来の欠点を改善し得
る擬似信号発生装置を提供せんとするものである。This invention generates a Doppler offset signal according to the distance change rate and distance of a pseudo target in synchronization with the timing when the transmission frequency change rate of the radar device is changed, and mixes it with the transmission signal supplied from the radar device. It is an object of the present invention to provide a pseudo signal generating device that can improve the above-mentioned drawbacks of the conventional art by generating a pseudo target signal.
この発明について第３図及び第４図を用いて詳述する。 This invention will be explained in detail using FIGS. 3 and 4.
第３図はこの発明の一実施例を示すブロック構成図、第
４図はこの発明における擬似目標信号の発生原理を表わ
す図であり２図中、（１）は上記第１図、（５）〜（７
）は上記第２図に示しだものと同一であり、（９）はド
ップラ・オフセット制御器、α〔はタイミング信号、α
０はドップラ・オフセット信号、（Ｌ３はこの発明の擬
似目標信号、 （＋３１はこの発明における位相検波信
号である。FIG. 3 is a block diagram showing an embodiment of the present invention, and FIG. 4 is a diagram showing the principle of generation of a pseudo target signal in this invention. ~(7
) is the same as shown in FIG. 2 above, (9) is the Doppler offset controller, α[ is the timing signal, α
0 is a Doppler offset signal, (L3 is a pseudo target signal of this invention, and (+31 is a phase detection signal of this invention).
第３図及び第４図において、ドップラ・オフセット制御
器（９）はレーダ装置から供給されるタイミング信号０
Ｑの立上りに同期して設定された擬似目標の距離変化率
孔を入力とし、電圧制御発振器（５）の出力信号（以下
［ドップラ・オフセット信号（Ｌυと呼ぶ。］）の周波
数が（２）式で与えられるｆｌになるような制御電圧を
発生し保持する。次に、ドップラ・オフセット制御器（
９）は設定された擬似目標の距離几及び距離変化率孔を
入力とし、タイミング信号ａ１の立下りに同期してドッ
プラ・オフセット信号＋１１１の周波数が（３）式で与
えられるｆｌになるような制御電圧を発生し保持する。In FIGS. 3 and 4, the Doppler offset controller (9) is operated by a timing signal 0 supplied from the radar device.
The distance change rate hole of the pseudo target set in synchronization with the rising edge of Q is input, and the frequency of the output signal (hereinafter referred to as Doppler offset signal (Lυ)) of the voltage controlled oscillator (5) is (2). Generate and maintain a control voltage such that fl is given by the formula.Next, the Doppler offset controller (
9) inputs the distance range and distance change rate hole of the set pseudo target, and synchronizes with the falling edge of the timing signal a1 so that the frequency of the Doppler offset signal +111 becomes fl given by equation (3). Generates and maintains control voltage.
ミキサ（６）では上記レーダ装置から供給される送信信
号（１）とドップラ・オフセット信号αＤがミキシング
されフィルタ（７）に入力される。フィルタ（７）でミ
キシングによるイメージ信号が除去され、この発明の擬
似目標信号α力が得られる。The mixer (6) mixes the transmission signal (1) supplied from the radar device and the Doppler offset signal αD, and inputs the mixed signal to the filter (7). The image signal due to mixing is removed by the filter (7), and the pseudo target signal α of the present invention is obtained.
なお、この発明の擬似目標信号ｕ２が上記レーダ装置に
入力されて位相検波されると、第４図に示すようなこの
発明における位相検波信号αＪが得られる。この信号波
形は第１図に示した位相検波信号（３）の波形と異なる
が、レーダ装置が周波数分析を行う区間３及び区間４に
おいては同一の波形である。Incidentally, when the pseudo target signal u2 of the present invention is input to the radar device and subjected to phase detection, a phase detection signal αJ of the present invention as shown in FIG. 4 is obtained. Although this signal waveform is different from the waveform of the phase detection signal (3) shown in FIG. 1, it is the same waveform in sections 3 and 4 in which the radar device performs frequency analysis.
以上述べたように、この発明によればハードウェア規模
の大きい遅延線を用いることなく、所望の距離及び距離
変化率の擬似目標信号を発生することができる。As described above, according to the present invention, it is possible to generate a pseudo target signal having a desired distance and distance change rate without using a large-scale hardware delay line.
第１図はＦＭレンジングの原理を表わす図、第２図は従
来の擬似信号発生装置の構成を示す図。
第３図はこの発明の一実施例を示すブロック構成図、第
４図はこの発明における擬似目標信号の発生原理を表わ
す図であり９図中、（１）は送信信号。
（２）は受信信号、（３）は位相検波信号、（４）は制
御電圧発生器、（５）は電圧制御発振器、（６）はミキ
サ、（７）はフィルタ、（８）は遅延線、（９）はドッ
プラ・オフセット制御器、α１はタイミング信号、（ｌ
υはドップラ・オフセット信号、α力はこの発明の擬似
目標信号。
Ｑ、１はこの発明における位相検波信号である。
なお２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。
第１図
第 ２ 図
第 ３ 図
第 ４ 図FIG. 1 is a diagram showing the principle of FM ranging, and FIG. 2 is a diagram showing the configuration of a conventional pseudo signal generator. FIG. 3 is a block diagram showing an embodiment of the present invention, and FIG. 4 is a diagram showing the principle of generation of a pseudo target signal in the present invention. In FIG. 9, (1) is a transmission signal. (2) is the received signal, (3) is the phase detection signal, (4) is the control voltage generator, (5) is the voltage controlled oscillator, (6) is the mixer, (7) is the filter, and (8) is the delay line. , (9) is the Doppler offset controller, α1 is the timing signal, (l
υ is a Doppler offset signal, and α power is a pseudo target signal of this invention. Q,1 is a phase detection signal in this invention. In FIG. 2, the same or corresponding parts are designated by the same reference numerals. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
目標信号の周波数分析を行つて目標の測距を行うＦＭレ
ンジング方式のレーダ装置に擬似目標信号を供給するよ
うに構成された擬似信号発生装置において、上記レーダ
装置の送信周波数変化率が変更されるタイミングに同期
し擬似目標の距離及び距離変化率に応じた周波数のドッ
プラ・オフセット信号を発生する手段を具備し、所望の
距離及び距離変化率の擬似目標信号を発生し得るように
構成したことを特徴とする擬似信号発生装置。A pseudo signal generator configured to supply a pseudo target signal to an FM ranging radar device that performs frequency analysis of a target signal received during a plurality of periods in which the frequency change rate of the transmitted signal is different to measure the range of the target. , comprising means for generating a Doppler offset signal of a frequency corresponding to the distance of the pseudo target and the distance change rate in synchronization with the timing at which the transmission frequency change rate of the radar device is changed, What is claimed is: 1. A pseudo signal generating device characterized in that it is configured to be able to generate a pseudo target signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59186070A JPS6165179A (en) | 1984-09-05 | 1984-09-05 | False signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59186070A JPS6165179A (en) | 1984-09-05 | 1984-09-05 | False signal generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6165179A true JPS6165179A (en) | 1986-04-03 |
| JPH0437957B2 JPH0437957B2 (en) | 1992-06-22 |
Family
ID=16181858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59186070A Granted JPS6165179A (en) | 1984-09-05 | 1984-09-05 | False signal generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6165179A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010122226A (en) * | 2008-11-24 | 2010-06-03 | Mitsubishi Electric R&D Centre Europe Bv | Method and system for determining at least one of distance to object and velocity of object |
| JP2014006072A (en) * | 2012-06-21 | 2014-01-16 | Nec Corp | Rader device, target data acquisition method, and target tracking system |
| JP2018084450A (en) * | 2016-11-22 | 2018-05-31 | 三菱電機株式会社 | Radar device |
| CN111505589A (en) * | 2020-04-21 | 2020-08-07 | 湖南赛博诺格电子科技有限公司 | Inter-pulse coherent false target interference method and device and computer equipment |
-
1984
- 1984-09-05 JP JP59186070A patent/JPS6165179A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010122226A (en) * | 2008-11-24 | 2010-06-03 | Mitsubishi Electric R&D Centre Europe Bv | Method and system for determining at least one of distance to object and velocity of object |
| JP2014006072A (en) * | 2012-06-21 | 2014-01-16 | Nec Corp | Rader device, target data acquisition method, and target tracking system |
| JP2018084450A (en) * | 2016-11-22 | 2018-05-31 | 三菱電機株式会社 | Radar device |
| CN111505589A (en) * | 2020-04-21 | 2020-08-07 | 湖南赛博诺格电子科技有限公司 | Inter-pulse coherent false target interference method and device and computer equipment |
| CN111505589B (en) * | 2020-04-21 | 2022-03-11 | 湖南赛博诺格电子科技有限公司 | Inter-pulse coherent false target interference method and device and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0437957B2 (en) | 1992-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2406316A (en) | Radio pulse system with interference eliminator | |
| GB1455157A (en) | Pulse type radar system | |
| JPS6165179A (en) | False signal generator | |
| GB933985A (en) | Time measurement apparatus | |
| RU193523U1 (en) | RADIO SIGNAL SHAPER | |
| GB958960A (en) | Improvements in or relating to radar systems | |
| GB593467A (en) | Arrangements for transmitting and receiving short electric pulses | |
| SU1339486A1 (en) | Device for measuring group time lag of delay line | |
| SU1441329A1 (en) | Phase shift calibrator | |
| JPS54137217A (en) | Facsimile device | |
| GB1287480A (en) | Carrier frequency generator | |
| SU1401553A1 (en) | Digital variable generator | |
| SU741185A1 (en) | Relative phase shift analyzer | |
| JPH01287483A (en) | Testing device for analog-digital hybrid ic | |
| JPH079112Y2 (en) | Nuclear magnetic resonance apparatus | |
| SU811501A1 (en) | Device for measuring inhomogeneity of frequency characteristics of communication chennel | |
| SU871300A2 (en) | Method of measuring delay time and its didpersion in ultrasonic delay line | |
| SU705370A1 (en) | Phase setter | |
| SU656194A1 (en) | Arrangement for synchronizing time scales | |
| SU742844A1 (en) | Radio engineering system for measuring the difference in distances | |
| SU1198438A1 (en) | Method of measuring pulse signal phase difference | |
| SU1062877A1 (en) | Device for synchronizing time scales using standard time radio signals | |
| JPS5616337A (en) | Monitor system for delay amount of transmission line | |
| SU736369A1 (en) | Multi-position frequency-phase signal manipulator | |
| SU856033A1 (en) | Frequency manipulator |