JPS5779475A - Radar device - Google Patents

Radar device

Info

Publication number
JPS5779475A
JPS5779475A JP15553480A JP15553480A JPS5779475A JP S5779475 A JPS5779475 A JP S5779475A JP 15553480 A JP15553480 A JP 15553480A JP 15553480 A JP15553480 A JP 15553480A JP S5779475 A JPS5779475 A JP S5779475A
Authority
JP
Japan
Prior art keywords
range
pulse width
radar device
linear
target
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
JP15553480A
Other languages
Japanese (ja)
Inventor
Yoshimasa Ohashi
Tetsuo Kirimoto
Tomomasa 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 JP15553480A priority Critical patent/JPS5779475A/en
Publication of JPS5779475A publication Critical patent/JPS5779475A/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
    • G01S13/26—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 improve minimum range detection performance and to maximize S/N ratio by pulse compression, by making the pulse width of a linear FM waveform variable in accordance with the range of a target from a radar device. CONSTITUTION:The pulse width of a linear FM waveform is made variable with the range of a target from a radar device. For example, a wave having a linear RM waveform as shown in the figure is generated by a transmitter 5 and radiated into the air from an antenna 3 through a transmission-reception device 4. An echo from the taget is received by a pulse comparession device 2 throuth the antenna 3 and transmission-reception switching device 4 and after the pulses are compressed, a range tracker 6 measures the range R from the radar device to the target. Further, when the value of this R decreases below CT/2 (where C is the velocity of light and T is transmitted pulse width), the transmitted pulse width T of the transmitter 5 is reduced to set the R a little bit greater than the CT/2.
JP15553480A 1980-11-05 1980-11-05 Radar device Pending JPS5779475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15553480A JPS5779475A (en) 1980-11-05 1980-11-05 Radar device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15553480A JPS5779475A (en) 1980-11-05 1980-11-05 Radar device

Publications (1)

Publication Number Publication Date
JPS5779475A true JPS5779475A (en) 1982-05-18

Family

ID=15608161

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15553480A Pending JPS5779475A (en) 1980-11-05 1980-11-05 Radar device

Country Status (1)

Country Link
JP (1) JPS5779475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121125A (en) * 1991-01-18 1992-06-09 Grumman Aerospace Corporation Optimum matched illumination waveform design process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121125A (en) * 1991-01-18 1992-06-09 Grumman Aerospace Corporation Optimum matched illumination waveform design process

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