JPS5559361A - Radar device - Google Patents

Radar device

Info

Publication number
JPS5559361A
JPS5559361A JP13292078A JP13292078A JPS5559361A JP S5559361 A JPS5559361 A JP S5559361A JP 13292078 A JP13292078 A JP 13292078A JP 13292078 A JP13292078 A JP 13292078A JP S5559361 A JPS5559361 A JP S5559361A
Authority
JP
Japan
Prior art keywords
distance
pulses
reception
wave angle
low wave
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
JP13292078A
Other languages
Japanese (ja)
Inventor
Norihide Eguchi
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 JP13292078A priority Critical patent/JPS5559361A/en
Publication of JPS5559361A publication Critical patent/JPS5559361A/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
    • G01S13/06—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
    • G01S13/22—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency
    • G01S13/225—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using irregular pulse repetition frequency with cyclic repetition of a non-uniform pulse sequence, e.g. staggered PRF

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 decide the target distance singularly as well as to increase the clutter suppression properties by securing the distance correlation process at the reception time for the low wave angle beam of the electronic scanning array altitude radar by transmitting the two sets of the minor repetition cycle pulses with switching. CONSTITUTION:The low wave angle beam transmits alternately and in switching the pulses of two types of minor repetition cycles 1/T1' and 1/T1'' which cover the short distance rather than the maximum necessary coverage region. Accordingly, the pulse repetition frequency increases to enhance the clutter suppression properties for the moving target indicator filter, and therefore the clutter occurring with the low wave angle due to the ground, the sea level and the like can be suppressed. On the other hand, two types of reception pulses showing virtual target distances Tr' and Tr'' receive the correlation process through the distance correlation circuit. Thus target distance Tr is decided singularly via the equivalent reception pulse of after the correlation and according to the both reception pulses featuring the phases coincided with each other.
JP13292078A 1978-10-27 1978-10-27 Radar device Pending JPS5559361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13292078A JPS5559361A (en) 1978-10-27 1978-10-27 Radar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13292078A JPS5559361A (en) 1978-10-27 1978-10-27 Radar device

Publications (1)

Publication Number Publication Date
JPS5559361A true JPS5559361A (en) 1980-05-02

Family

ID=15092594

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13292078A Pending JPS5559361A (en) 1978-10-27 1978-10-27 Radar device

Country Status (1)

Country Link
JP (1) JPS5559361A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112580A (en) * 1979-02-22 1980-08-30 Nec Corp Radar unit
JP2010281689A (en) * 2009-06-04 2010-12-16 Toshiba Corp Radar system and radar signal processing method
CN113093137A (en) * 2021-04-02 2021-07-09 电子科技大学 Clutter suppression method based on optimal frequency offset estimation of FDA-MIMO radar

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55112580A (en) * 1979-02-22 1980-08-30 Nec Corp Radar unit
JP2010281689A (en) * 2009-06-04 2010-12-16 Toshiba Corp Radar system and radar signal processing method
CN113093137A (en) * 2021-04-02 2021-07-09 电子科技大学 Clutter suppression method based on optimal frequency offset estimation of FDA-MIMO radar

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