JPS6457186A - Radar apparatus - Google Patents

Radar apparatus

Info

Publication number
JPS6457186A
JPS6457186A JP62213958A JP21395887A JPS6457186A JP S6457186 A JPS6457186 A JP S6457186A JP 62213958 A JP62213958 A JP 62213958A JP 21395887 A JP21395887 A JP 21395887A JP S6457186 A JPS6457186 A JP S6457186A
Authority
JP
Japan
Prior art keywords
signal
band
mixer
dummy
dummy signal
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
JP62213958A
Other languages
Japanese (ja)
Inventor
Takashi Kawaai
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
Original Assignee
Mitsubishi Electric Corp
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 filed Critical Mitsubishi Electric Corp
Priority to JP62213958A priority Critical patent/JPS6457186A/en
Publication of JPS6457186A publication Critical patent/JPS6457186A/en
Pending legal-status Critical Current

Links

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To measure the capacity of a radar apparatus with good accuracy, by performing the variable attenuation of a dummy signal in a IF band. CONSTITUTION:The IF band signal VC from a reference signal oscillator 1 is inputted to a variable attenuator 6 to apply predetermined attenuation quantity only to a dummy signal time band. Thereafter said signal is mixed with the RF band output V1 of a local oscillator 2 by a mixer 3 to be converted to a signal of transmission frequency. Only the transmission pulse signal in the output of the mixer 3 is amplified in power by a power amplifier 4 and, subsequently, a transmission pulse signal VT is emitted to air through a duplexer 9, a directional coupler 8 and an antenna 7. A dummy signal is extracted by a change-over circuit 5 to be injected in a receiving system as a signal VP from the coupler 8 and received by a receiving circuit 10 through the duplexer 9 to be outputted to a target detector 20. As mentioned above, since the attenuator 6 is provided between the mixer 3 and the oscillator 1 and the attenuation of the dummy signal is performed in the IF band, the leak level of the dummy signal to the radar receiving circuit due to the spatial coupling in an RF band becomes low and capacity can be evaluated with high accuracy.
JP62213958A 1987-08-27 1987-08-27 Radar apparatus Pending JPS6457186A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62213958A JPS6457186A (en) 1987-08-27 1987-08-27 Radar apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62213958A JPS6457186A (en) 1987-08-27 1987-08-27 Radar apparatus

Publications (1)

Publication Number Publication Date
JPS6457186A true JPS6457186A (en) 1989-03-03

Family

ID=16647875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62213958A Pending JPS6457186A (en) 1987-08-27 1987-08-27 Radar apparatus

Country Status (1)

Country Link
JP (1) JPS6457186A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009031194A (en) * 2007-07-30 2009-02-12 Toshiba Corp Transmitting/receiving module

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062789A (en) * 1973-10-06 1975-05-28
JPS5062790A (en) * 1973-10-06 1975-05-28
JPS54106185A (en) * 1978-02-08 1979-08-20 Tech Res & Dev Inst Of Japan Def Agency Radar test signal generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062789A (en) * 1973-10-06 1975-05-28
JPS5062790A (en) * 1973-10-06 1975-05-28
JPS54106185A (en) * 1978-02-08 1979-08-20 Tech Res & Dev Inst Of Japan Def Agency Radar test signal generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009031194A (en) * 2007-07-30 2009-02-12 Toshiba Corp Transmitting/receiving module

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