JPS54106185A - Radar test signal generator - Google Patents

Radar test signal generator

Info

Publication number
JPS54106185A
JPS54106185A JP1325778A JP1325778A JPS54106185A JP S54106185 A JPS54106185 A JP S54106185A JP 1325778 A JP1325778 A JP 1325778A JP 1325778 A JP1325778 A JP 1325778A JP S54106185 A JPS54106185 A JP S54106185A
Authority
JP
Japan
Prior art keywords
signal
mixer
band
frequency
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
Application number
JP1325778A
Other languages
Japanese (ja)
Inventor
Fumio Yamagishi
Shinkichi Nishimoto
Makoto Onoki
Norio Muto
Masanobu Tsudo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Mitsubishi Electric Corp
Technical Research and Development Institute of Japan Defence Agency
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp, Technical Research and Development Institute of Japan Defence Agency filed Critical Mitsubishi Electric Corp
Priority to JP1325778A priority Critical patent/JPS54106185A/en
Publication of JPS54106185A publication Critical patent/JPS54106185A/en
Pending legal-status Critical Current

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
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • 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
    • G01S7/40—Means for monitoring or calibrating
    • G01S7/4052—Means for monitoring or calibrating by simulation of echoes
    • G01S7/406—Means for monitoring or calibrating by simulation of echoes using internally generated reference signals, e.g. via delay line, via RF or IF signal injection or via integrated reference reflector or transponder

Abstract

PURPOSE:To obtain a wide and dynamic range as well as to eliminate the leak at the RF band by inserting the attenuator to the IF band at the preceding step of the mixer, and thus to ensure an easy and accurate measurement of the dynamic range and others for Smin and the receiver. CONSTITUTION:Part of the COHO signal featuring fequency fc of the transmitter is amplified 2 and then converted into the pulse signal through modulator 3 to be supplied to mixer 4 via attenuator 6. Thus, the pulse signal is mixed with the signal of frequency fL derived from STALO8 to turn to false fixed signal of frequency fL + fc. On the other hand, the false mobile target signal is obtained by supplying the signal of frequency fc + fd via switch 1. With insertion of attenuator 6 between modulator 3 and mixer 4, the output of mixer 4 can be controlled at the frequency IF band of COHO for the signal of the RF band. Accordingly, in case the very minute signal is required for measurement of Smin or the like, the output of the mixer turns to the attenuation signal by attenuating previously the level of COHO to a proper level. Thus, the signal which causes the leak as the fault can be eliminated.
JP1325778A 1978-02-08 1978-02-08 Radar test signal generator Pending JPS54106185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1325778A JPS54106185A (en) 1978-02-08 1978-02-08 Radar test signal generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1325778A JPS54106185A (en) 1978-02-08 1978-02-08 Radar test signal generator

Publications (1)

Publication Number Publication Date
JPS54106185A true JPS54106185A (en) 1979-08-20

Family

ID=11828154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1325778A Pending JPS54106185A (en) 1978-02-08 1978-02-08 Radar test signal generator

Country Status (1)

Country Link
JP (1) JPS54106185A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108479A (en) * 1981-11-20 1983-06-28 Natl Space Dev Agency Japan<Nasda> Reference receiving signal generator of synthetic aperture radar
JPS6457186A (en) * 1987-08-27 1989-03-03 Mitsubishi Electric Corp Radar apparatus
KR19990049014A (en) * 1997-12-11 1999-07-05 전주범 Operational inspection device of sonar detection system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174594A (en) * 1974-12-24 1976-06-28 Mitsubishi Electric Corp stc kairo

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5174594A (en) * 1974-12-24 1976-06-28 Mitsubishi Electric Corp stc kairo

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58108479A (en) * 1981-11-20 1983-06-28 Natl Space Dev Agency Japan<Nasda> Reference receiving signal generator of synthetic aperture radar
JPH021272B2 (en) * 1981-11-20 1990-01-10 Nat Space Dev Agency
JPS6457186A (en) * 1987-08-27 1989-03-03 Mitsubishi Electric Corp Radar apparatus
KR19990049014A (en) * 1997-12-11 1999-07-05 전주범 Operational inspection device of sonar detection system

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