JPS5790179A - Doppler frequency compensation system for pulse compression radar - Google Patents

Doppler frequency compensation system for pulse compression radar

Info

Publication number
JPS5790179A
JPS5790179A JP55165708A JP16570880A JPS5790179A JP S5790179 A JPS5790179 A JP S5790179A JP 55165708 A JP55165708 A JP 55165708A JP 16570880 A JP16570880 A JP 16570880A JP S5790179 A JPS5790179 A JP S5790179A
Authority
JP
Japan
Prior art keywords
phase
doppler filter
doppler
signals
frequency
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
Application number
JP55165708A
Other languages
Japanese (ja)
Other versions
JPS6222109B2 (en
Inventor
Natsuki Kondo
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 JP55165708A priority Critical patent/JPS5790179A/en
Publication of JPS5790179A publication Critical patent/JPS5790179A/en
Publication of JPS6222109B2 publication Critical patent/JPS6222109B2/ja
Granted 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
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/26—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave
    • G01S13/28—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the transmitted pulses use a frequency- or phase-modulated carrier wave with time compression of received pulses

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 make it possible to handle a plurality of targets varied in the Doppler frequency with an output signal of each Doppler filter at the rear stage of a Doppler filter bank multiplied by a fixed phase compensation value according to the center frequency of the Doppler filter. CONSTITUTION:RF pulses (pulse width gamma and cycle T) from a transmitter 1 are applied to a phase modulator 2 to be modulated in the phase within a transmission pulse width and emitted to the target from an antenna 4. Received signals are converted into an IF frequency with a receiver 5 and then, deteted in the phase with a phase detector 7. The signals thus detected are quantized and input into a Doppler filter bank 9 in which an FET computation is performed at a point N for each range corresponding to respective subbits. The output signals of the Doppler filter are subjected to a fixed level of phase shift for each range and the phase shift thus obtained is compensated by multiplying a fixed phase value for each range bin by means of a phase compensation circuit 10. The output signals of the circut 10 undergo a correlative processing with correlator 11 whereby an output of a pulse compressed wave-form is obtained.
JP55165708A 1980-11-25 1980-11-25 Doppler frequency compensation system for pulse compression radar Granted JPS5790179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55165708A JPS5790179A (en) 1980-11-25 1980-11-25 Doppler frequency compensation system for pulse compression radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55165708A JPS5790179A (en) 1980-11-25 1980-11-25 Doppler frequency compensation system for pulse compression radar

Publications (2)

Publication Number Publication Date
JPS5790179A true JPS5790179A (en) 1982-06-04
JPS6222109B2 JPS6222109B2 (en) 1987-05-15

Family

ID=15817539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55165708A Granted JPS5790179A (en) 1980-11-25 1980-11-25 Doppler frequency compensation system for pulse compression radar

Country Status (1)

Country Link
JP (1) JPS5790179A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212781A (en) * 1985-03-18 1986-09-20 Nec Corp Pulse doppler radar system
US5229775A (en) * 1991-09-06 1993-07-20 Mitsubishi Denki Kabushiki Kaisha Digital pulse compression apparatus
JP2009198232A (en) * 2008-02-20 2009-09-03 National Institute Of Information & Communication Technology Passive distance measuring apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62100217U (en) * 1985-12-16 1987-06-26
JPS62100218U (en) * 1985-12-16 1987-06-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61212781A (en) * 1985-03-18 1986-09-20 Nec Corp Pulse doppler radar system
US5229775A (en) * 1991-09-06 1993-07-20 Mitsubishi Denki Kabushiki Kaisha Digital pulse compression apparatus
JP2009198232A (en) * 2008-02-20 2009-09-03 National Institute Of Information & Communication Technology Passive distance measuring apparatus

Also Published As

Publication number Publication date
JPS6222109B2 (en) 1987-05-15

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