JPS56104265A - Radar signal processor - Google Patents

Radar signal processor

Info

Publication number
JPS56104265A
JPS56104265A JP697480A JP697480A JPS56104265A JP S56104265 A JPS56104265 A JP S56104265A JP 697480 A JP697480 A JP 697480A JP 697480 A JP697480 A JP 697480A JP S56104265 A JPS56104265 A JP S56104265A
Authority
JP
Japan
Prior art keywords
circuit
signal
output
data
gate
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
JP697480A
Other languages
Japanese (ja)
Other versions
JPS636835B2 (en
Inventor
Yuichi Okabe
Katsuzo Tsukada
Masao Chiba
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP697480A priority Critical patent/JPS56104265A/en
Publication of JPS56104265A publication Critical patent/JPS56104265A/en
Publication of JPS636835B2 publication Critical patent/JPS636835B2/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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/526—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on the whole spectrum without loss of range information, e.g. using delay line cancellers or comb filters

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 remove unnecessary data without deterioration of the ability to quantitatively measure the weather data and the like by removing ground clutter and the like in a moving target indication (MTI) manner in order to detect the desired signals and controlling the gate of the output circuit. CONSTITUTION:The signal (a) received by a logarithmic characteristic reception circuit 32 is converted into a digital value in a quantizing circuit 33, processed in a delay circuit 34 and a subtracting circuit 35 in a moving target indication manner and becomes a signal (c) with ground clutter and the like removed substantially. When the desired signal 42 about weather data or the like in the signal (c) is detected, a detecting circuit 38 generates a gate signal (d) through an amplitude comparing circuit 382 in order to control the gate circuit 372 in an output circuit 37. Thereby, the unnecessary data in the output obtained by adding the signal (b) whose clutter fluctuation or the like is decided to be large by a logarithm converting circuit 36 and the output of the circuit 33 is removed and the quantitative data such as the weather data (e) or the like can be extracted without deterioration.
JP697480A 1980-01-25 1980-01-25 Radar signal processor Granted JPS56104265A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP697480A JPS56104265A (en) 1980-01-25 1980-01-25 Radar signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP697480A JPS56104265A (en) 1980-01-25 1980-01-25 Radar signal processor

Publications (2)

Publication Number Publication Date
JPS56104265A true JPS56104265A (en) 1981-08-19
JPS636835B2 JPS636835B2 (en) 1988-02-12

Family

ID=11653163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP697480A Granted JPS56104265A (en) 1980-01-25 1980-01-25 Radar signal processor

Country Status (1)

Country Link
JP (1) JPS56104265A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58142278A (en) * 1982-02-16 1983-08-24 スペリ−・コ−ポレイシヨン Undesirable geographical-feature signal inhibiter for meteorological radar
US4628318A (en) * 1983-12-02 1986-12-09 Rockwell International Corporation Ground clutter suppression technique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58142278A (en) * 1982-02-16 1983-08-24 スペリ−・コ−ポレイシヨン Undesirable geographical-feature signal inhibiter for meteorological radar
EP0086635A2 (en) * 1982-02-16 1983-08-24 Honeywell Inc. Suppressor of terrain clutter for a pulsed weather radar
JPH0256638B2 (en) * 1982-02-16 1990-11-30 Unisys Corp
US4628318A (en) * 1983-12-02 1986-12-09 Rockwell International Corporation Ground clutter suppression technique

Also Published As

Publication number Publication date
JPS636835B2 (en) 1988-02-12

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