JPS56108982A - Receiver for pair-pulse distance-measurement signal - Google Patents

Receiver for pair-pulse distance-measurement signal

Info

Publication number
JPS56108982A
JPS56108982A JP1133180A JP1133180A JPS56108982A JP S56108982 A JPS56108982 A JP S56108982A JP 1133180 A JP1133180 A JP 1133180A JP 1133180 A JP1133180 A JP 1133180A JP S56108982 A JPS56108982 A JP S56108982A
Authority
JP
Japan
Prior art keywords
pair
output
detector
circuit
intermediate 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.)
Pending
Application number
JP1133180A
Other languages
Japanese (ja)
Inventor
Masami Iwaki
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 JP1133180A priority Critical patent/JPS56108982A/en
Publication of JPS56108982A publication Critical patent/JPS56108982A/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
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted

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 an accurate distance measurement by suppressing CW disturbing wave components by detecting the mean peak value of a noise from the output of a detecting circuit and then by applying it as a DC voltage to an intermediate frequency amplifying circuit for assuming gain control. CONSTITUTION:When an aircraft interrogator interrogates or responds to a ground transponder, a CW disturbing wave is superposed upon an interrogation signal, amplified by intermediate frequency amplifying circuit 1 and detected by detector 2. Mean-peak-value detecting circuit 5 detects the mean peak value of a noise from the output of detector 2 and its detection output is applied as a gain control voltage to intermediate frequency amplifying circuit 1 via OR circuit 6. In the output of detector 2, the CW disturbing wave component is suppressed greatly and only a pair of pulses are outputted as decoded signal pulses by pair-pulse selector 3.
JP1133180A 1980-02-01 1980-02-01 Receiver for pair-pulse distance-measurement signal Pending JPS56108982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1133180A JPS56108982A (en) 1980-02-01 1980-02-01 Receiver for pair-pulse distance-measurement signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1133180A JPS56108982A (en) 1980-02-01 1980-02-01 Receiver for pair-pulse distance-measurement signal

Publications (1)

Publication Number Publication Date
JPS56108982A true JPS56108982A (en) 1981-08-28

Family

ID=11775041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1133180A Pending JPS56108982A (en) 1980-02-01 1980-02-01 Receiver for pair-pulse distance-measurement signal

Country Status (1)

Country Link
JP (1) JPS56108982A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61147984U (en) * 1985-03-06 1986-09-12
JPH0563476A (en) * 1991-08-28 1993-03-12 Nec Corp Agc circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61147984U (en) * 1985-03-06 1986-09-12
JPH0563476A (en) * 1991-08-28 1993-03-12 Nec Corp Agc circuit

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