JPS6441800A - Proximity fuse - Google Patents

Proximity fuse

Info

Publication number
JPS6441800A
JPS6441800A JP62197002A JP19700287A JPS6441800A JP S6441800 A JPS6441800 A JP S6441800A JP 62197002 A JP62197002 A JP 62197002A JP 19700287 A JP19700287 A JP 19700287A JP S6441800 A JPS6441800 A JP S6441800A
Authority
JP
Japan
Prior art keywords
code
enemy
bit
make
modulated
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
JP62197002A
Other languages
Japanese (ja)
Inventor
Katsuo Mizusaki
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 JP62197002A priority Critical patent/JPS6441800A/en
Publication of JPS6441800A publication Critical patent/JPS6441800A/en
Pending legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE: To make detection by the enemy difficult, make the enemy's interruption hard to occur, and enable clearly setting the operational range by subjecting transmission wave to spectrum diffusion and by effecting correlation inside. CONSTITUTION: A transmission wave produced by an oscillator 1 is modulated by a modulator 3 by means of spread spectrum code produced by an encoder 10 so that by expanding a frequency band width the detection by the enemy is made difficult. Even if there should be the enemy's interruption, an output of the modulator 3 is delayed using a delay line 4 by a time corresponding to 1 bit of the encoder 10 so as to make the output of a video amplifier 8 of a receiving signal correlate respectively to the code 1 bit in advance and the code 1 bit in the rear of the transmission signal with a first correlating device 12a and a second correlating device 12b. Since an interrupting wave not yet modulated by the same code as the modulated code is inversely diffused and put out of Doppler filter 13a, 13b bands. Therefore, while being strengthened against interruption, the operating range is designed to be limited to a distance corresponding to the time taken for a radio wave to make a return which has only a lag of 1 bit from the transmission signal.
JP62197002A 1987-08-06 1987-08-06 Proximity fuse Pending JPS6441800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197002A JPS6441800A (en) 1987-08-06 1987-08-06 Proximity fuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197002A JPS6441800A (en) 1987-08-06 1987-08-06 Proximity fuse

Publications (1)

Publication Number Publication Date
JPS6441800A true JPS6441800A (en) 1989-02-14

Family

ID=16367178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197002A Pending JPS6441800A (en) 1987-08-06 1987-08-06 Proximity fuse

Country Status (1)

Country Link
JP (1) JPS6441800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0650075A (en) * 1992-07-31 1994-02-22 Akabira Boring Service Kk Automatic monitoring system for curving of hole
US7423472B2 (en) 2005-03-28 2008-09-09 Matsushita Electric Industrial Co., Ltd. Power switching circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0650075A (en) * 1992-07-31 1994-02-22 Akabira Boring Service Kk Automatic monitoring system for curving of hole
US7423472B2 (en) 2005-03-28 2008-09-09 Matsushita Electric Industrial Co., Ltd. Power switching circuit

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