JPS5596471A - Encoded pulse compressor - Google Patents

Encoded pulse compressor

Info

Publication number
JPS5596471A
JPS5596471A JP385879A JP385879A JPS5596471A JP S5596471 A JPS5596471 A JP S5596471A JP 385879 A JP385879 A JP 385879A JP 385879 A JP385879 A JP 385879A JP S5596471 A JPS5596471 A JP S5596471A
Authority
JP
Japan
Prior art keywords
interval
transmitted code
code
transmitted
signals
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
JP385879A
Other languages
Japanese (ja)
Other versions
JPS6244622B2 (en
Inventor
Shoji Matsuda
Eiji Isobe
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP385879A priority Critical patent/JPS5596471A/en
Publication of JPS5596471A publication Critical patent/JPS5596471A/en
Publication of JPS6244622B2 publication Critical patent/JPS6244622B2/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
    • G01S13/284—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 using coded pulses
    • G01S13/288—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 using coded pulses phase modulated

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 reduce the unevenness of the compressing characteristic depending on the sample timing of the signals received by addition of the correlation outputs between the values sampled in the delaying elements at an interval of m and the transmitted code with the stages of the sampling cycles and the delaying elements set at m. CONSTITUTION:The signals transmitted from the transmitter are phase-detected on the receiving side to reproduce the transmitted code. The coded pulses X of the received signals thus reproduced are applied to an m-stage tapped analog delay line 11, sampled by clockpulses CP and then, transferred. The contents of the delay line 11 are detected by stages and weighted with a multiplier 12. The weight coefficient to multiply the output of each stage is set equivalent to the time inversion of the transmitted code in the repetition of each bit of the code every m times and the correlation is determined between the values sampled at a interval of m and the transmitted code. Then, one or several correlation outputs are added. For example, the tap outputs at the interval of m are grouped at one set and added with adders 13-1-m every set. Thus, m sets of compressed waves V1...Vm are obtained.
JP385879A 1979-01-19 1979-01-19 Encoded pulse compressor Granted JPS5596471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP385879A JPS5596471A (en) 1979-01-19 1979-01-19 Encoded pulse compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP385879A JPS5596471A (en) 1979-01-19 1979-01-19 Encoded pulse compressor

Publications (2)

Publication Number Publication Date
JPS5596471A true JPS5596471A (en) 1980-07-22
JPS6244622B2 JPS6244622B2 (en) 1987-09-21

Family

ID=11568878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP385879A Granted JPS5596471A (en) 1979-01-19 1979-01-19 Encoded pulse compressor

Country Status (1)

Country Link
JP (1) JPS5596471A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006170842A (en) * 2004-12-16 2006-06-29 Furuno Electric Co Ltd Pulse compression device, detection device, and pulse compression method
JP2014519038A (en) * 2011-06-01 2014-08-07 パナソニック株式会社 High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51138102A (en) * 1975-05-24 1976-11-29 Japan Radio Co Ltd M-series signal detection system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51138102A (en) * 1975-05-24 1976-11-29 Japan Radio Co Ltd M-series signal detection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006170842A (en) * 2004-12-16 2006-06-29 Furuno Electric Co Ltd Pulse compression device, detection device, and pulse compression method
JP2014519038A (en) * 2011-06-01 2014-08-07 パナソニック株式会社 High-speed, high-resolution, wide-range, low-power analog correlator and radar sensor

Also Published As

Publication number Publication date
JPS6244622B2 (en) 1987-09-21

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