JPS57182671A - Proximity fuse - Google Patents

Proximity fuse

Info

Publication number
JPS57182671A
JPS57182671A JP56068564A JP6856481A JPS57182671A JP S57182671 A JPS57182671 A JP S57182671A JP 56068564 A JP56068564 A JP 56068564A JP 6856481 A JP6856481 A JP 6856481A JP S57182671 A JPS57182671 A JP S57182671A
Authority
JP
Japan
Prior art keywords
signal
doppler
reflected
ground surface
target plane
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
JP56068564A
Other languages
Japanese (ja)
Inventor
Hideo Yamane
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 JP56068564A priority Critical patent/JPS57182671A/en
Publication of JPS57182671A publication Critical patent/JPS57182671A/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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/505—Systems of measurement based on relative movement of target using Doppler effect for determining closest range to a target or corresponding time, e.g. miss-distance indicator

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 prevent a malfunction of a proximity fuse due to a reflection signal from the ground surface or the sea surface, by varying a band where a signal is intercepted in accordance with a speed of a guided flying object, and removing a signal reflected from the ground surface or the sea surface. CONSTITUTION:Before a target plane 2 enters into a beam of an antenna 6, a signal which has received a prescribed Doppler deviation is reflected from the ground surface or the sea surface 5 and is received by a proximity fuse. This received signal passes through a duplexer 10 becomes a Doppler signal by a mixer 11, and enters into a band cut off filter 14. This filter is changed as to its cut off band by voltage being proportional to a speed of a guided flying object 1, and cuts off a Doppler signal reflected from the ground surface or the sea surface 5. Subsequently, when the target plane 2 enters into a beam of the antenna 6, the signal receives a Doppler shift being proportional to a relative speed of the flying object 1 and the target plane 2, becoms a Doppler signal in the same way as a reflected way from the ground surface or the sea surface 5, and inters into the bandpass filter 14. The Doppler signal reflected from the target plane 2 passes through the filter 14, is compared 15 with a threshold level, and when it exceeds the threshold level, an initiating signal is formed.
JP56068564A 1981-05-07 1981-05-07 Proximity fuse Pending JPS57182671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56068564A JPS57182671A (en) 1981-05-07 1981-05-07 Proximity fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56068564A JPS57182671A (en) 1981-05-07 1981-05-07 Proximity fuse

Publications (1)

Publication Number Publication Date
JPS57182671A true JPS57182671A (en) 1982-11-10

Family

ID=13377377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56068564A Pending JPS57182671A (en) 1981-05-07 1981-05-07 Proximity fuse

Country Status (1)

Country Link
JP (1) JPS57182671A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05333144A (en) * 1992-05-29 1993-12-17 Tech Res & Dev Inst Of Japan Def Agency Moving target detecting radar device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05333144A (en) * 1992-05-29 1993-12-17 Tech Res & Dev Inst Of Japan Def Agency Moving target detecting radar device

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