JPS55116284A - Doppler radar device - Google Patents

Doppler radar device

Info

Publication number
JPS55116284A
JPS55116284A JP2252279A JP2252279A JPS55116284A JP S55116284 A JPS55116284 A JP S55116284A JP 2252279 A JP2252279 A JP 2252279A JP 2252279 A JP2252279 A JP 2252279A JP S55116284 A JPS55116284 A JP S55116284A
Authority
JP
Japan
Prior art keywords
velocity
doppler
echo
target
velocity distribution
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
JP2252279A
Other languages
Japanese (ja)
Inventor
Jiro Aoyanagi
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.)
KISHIYOUCHIYOU CHIYOUKAN
KISHIYOUCHIYOU CHOKAN
Original Assignee
KISHIYOUCHIYOU CHIYOUKAN
KISHIYOUCHIYOU CHOKAN
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 KISHIYOUCHIYOU CHIYOUKAN, KISHIYOUCHIYOU CHOKAN filed Critical KISHIYOUCHIYOU CHIYOUKAN
Priority to JP2252279A priority Critical patent/JPS55116284A/en
Publication of JPS55116284A publication Critical patent/JPS55116284A/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
    • 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
    • G01S13/581—Velocity or trajectory determination systems; Sense-of-movement determination systems using transmission of interrupted pulse modulated waves and based upon the Doppler effect resulting from movement of targets

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

PURPOSE:To operate correct detection even when the velocity of a target exceeds the maximum Doppler measurement velocity by eliminating the echo velocity phenomenon inherent to the pulse Doppler radar system, and measuring the true velocity distribution of the distributed target. CONSTITUTION:Transmitter 9 uses two different repetition frequencies by switching them and sends microwave pulses, and the reflected waves are A-D converted by converters 6a and 6b, via mixer 3 and phase detector 5. Next, positive and negative Doppler average velocities are obtained from the frequency spectrum calculated by the high-speed Fourier transformation operated by average velocity processing circuits 10a, 10b, and the amplitude of the reflected signal from the target is taken out. Further, the echo effect is eliminated by echo velocity compensation circuit 11, and the absolute value of the velocity distribution is determined by Doppler true velocity distribution forming circuit 12 and is displayed in display circuit 13. For this reason, the Doppler velocity echo effect can be eliminated and the true velocity distribution can be reproduced.
JP2252279A 1979-03-01 1979-03-01 Doppler radar device Pending JPS55116284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2252279A JPS55116284A (en) 1979-03-01 1979-03-01 Doppler radar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2252279A JPS55116284A (en) 1979-03-01 1979-03-01 Doppler radar device

Publications (1)

Publication Number Publication Date
JPS55116284A true JPS55116284A (en) 1980-09-06

Family

ID=12085102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2252279A Pending JPS55116284A (en) 1979-03-01 1979-03-01 Doppler radar device

Country Status (1)

Country Link
JP (1) JPS55116284A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216086A1 (en) * 2018-05-09 2019-11-14 古野電気株式会社 Meteorological radar device, meteorological observation method, and meteorological observation program
US20230072441A1 (en) * 2021-09-03 2023-03-09 Texas Instruments Incorporated Empty band doppler division multiple access

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216086A1 (en) * 2018-05-09 2019-11-14 古野電気株式会社 Meteorological radar device, meteorological observation method, and meteorological observation program
JPWO2019216086A1 (en) * 2018-05-09 2021-05-27 古野電気株式会社 Meteorological radar equipment, meteorological observation methods, and meteorological observation programs
US20230072441A1 (en) * 2021-09-03 2023-03-09 Texas Instruments Incorporated Empty band doppler division multiple access

Similar Documents

Publication Publication Date Title
GB1524633A (en) Frequency spectrum analyzer and radar system embloying the same
GB1455157A (en) Pulse type radar system
AU2006248845A1 (en) Marine radar apparatus
GB1420513A (en) Range measurement pulse radar system
EP0321717A3 (en) Ultrasonic speckle velocity measurement method and apparatus
US4635060A (en) Coherent-on-receive radar with prephase correction circuit
GB1325629A (en) Signal processor
JPS55116284A (en) Doppler radar device
US2677126A (en) Wave signaling system
GB983900A (en) Improvements in or relating to radar systems
US3798643A (en) Pulsed doppler radar
GB868078A (en) Two-pulse moving target indication radar system
JPS55101878A (en) Pulse doppler radar
JPS5455198A (en) Radar apparatus
JPS5551376A (en) Fm ranging system for pulse doppler radar
US3132340A (en) Frequency modulation distance indicator
GB656094A (en) Improvements in or relating to radar systems
US3241138A (en) Radar speed meter
GB975177A (en) Improvements in or relating to doppler radar apparatus
FR2396310A1 (en) Responder for simulation of radar target - permits target radial speed and distance to be retransmitted to radar
US3745576A (en) Impulse radar system utilizing pulse duration modulation
Wall A target simulator for frequency agile radars
JPS5448192A (en) Pulse doppler radar device
JPS5531946A (en) Radar unit of moving objective detection
Tujaka On frequency stability of transmitter in LFMCW MTD radar