JPS57125863A - Synthesized aperture radar - Google Patents

Synthesized aperture radar

Info

Publication number
JPS57125863A
JPS57125863A JP56011941A JP1194181A JPS57125863A JP S57125863 A JPS57125863 A JP S57125863A JP 56011941 A JP56011941 A JP 56011941A JP 1194181 A JP1194181 A JP 1194181A JP S57125863 A JPS57125863 A JP S57125863A
Authority
JP
Japan
Prior art keywords
transmission
circulators
receiving
signal
transmitter
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
JP56011941A
Other languages
Japanese (ja)
Inventor
Hirokazu Tanaka
Makoto Ono
Hisashi Sawada
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 JP56011941A priority Critical patent/JPS57125863A/en
Publication of JPS57125863A publication Critical patent/JPS57125863A/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
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver

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

PURPOSE:To switch smoothly a radar to transmission and receiving, by providing plural latching type circulators between an antenna, a transmitter, and a receiver and switching circulators other than the first-stage one to the dummy side and the opposite side synthronously with transmission and receiving. CONSTITUTION:Transmission radio waves 4 are transmitted to an observation object 5 from a transmitter 1 through a transmission/receiving changeover switch 2 and an antenna 3, and a reflection echo 6 is received by a receiver 7. The transmission/receiving changeover switch 2 consists of latching type circulators 8, 9, and 11 and dummys 10 and 12. The transmission signal from the transmitter 1 goes in the direction of an arrow in the circulator 8 and is led to the antenna 3, and the signal is flowed in directions of solid-line arrows in circulators 9 and 11, and all of the leakage signal are absorbed by dummys 10 and 12. Just before the received reflection echo 6 reaches the circulator 8, circulators 9 and 11 are switched to flow the signal is directions of dotted-line arrows, and the reflection echo 6 is led to the receiver. Thus, the radar is switched surely to transmission and receiving.
JP56011941A 1981-01-29 1981-01-29 Synthesized aperture radar Pending JPS57125863A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56011941A JPS57125863A (en) 1981-01-29 1981-01-29 Synthesized aperture radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56011941A JPS57125863A (en) 1981-01-29 1981-01-29 Synthesized aperture radar

Publications (1)

Publication Number Publication Date
JPS57125863A true JPS57125863A (en) 1982-08-05

Family

ID=11791667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56011941A Pending JPS57125863A (en) 1981-01-29 1981-01-29 Synthesized aperture radar

Country Status (1)

Country Link
JP (1) JPS57125863A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087980A (en) * 1997-11-14 2000-07-11 Nec Corporation Radar of FM-CW system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6087980A (en) * 1997-11-14 2000-07-11 Nec Corporation Radar of FM-CW system

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