JPS6486084A - Radar sensor for short distance - Google Patents

Radar sensor for short distance

Info

Publication number
JPS6486084A
JPS6486084A JP62245172A JP24517287A JPS6486084A JP S6486084 A JPS6486084 A JP S6486084A JP 62245172 A JP62245172 A JP 62245172A JP 24517287 A JP24517287 A JP 24517287A JP S6486084 A JPS6486084 A JP S6486084A
Authority
JP
Japan
Prior art keywords
short distance
transmitting
delay
delay circuits
deltaf
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
JP62245172A
Other languages
Japanese (ja)
Inventor
Mitsuo Makimoto
Akiro Ando
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62245172A priority Critical patent/JPS6486084A/en
Publication of JPS6486084A publication Critical patent/JPS6486084A/en
Pending legal-status Critical Current

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  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To perform measurement at a short distance difficult by a conventional system, by providing a delay circuit in a transmitting or receiving circuit and generating beat frequency even when an actual distance to be measured is 0. CONSTITUTION:Delay circuits 105, 109 are inserted between a transmitting amplifier 104 and a transmitting antenna 106 as well as between a receiving antenna 108 and a receiving amplifier 110. When the delay times of the delay circuits 105, 109 are respectively set to T1, T2, beat frequency fb provides formula (wherein a mark L is the distance from each of the antennas 106, 108 to an object 107 and fp is the repeating cycle of a triangle wave). When planning is performed under condition of L=0 and fbapprox.=10fp, the delay circuits 105, 109 becoming T1+T2=2.5/DELTAF may be provided. In the case of DELTAF=10MHz, T1+T2=0.25mus is formed. By this method, measurement at a short distance difficult by a conventional system becomes possible.
JP62245172A 1987-09-29 1987-09-29 Radar sensor for short distance Pending JPS6486084A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62245172A JPS6486084A (en) 1987-09-29 1987-09-29 Radar sensor for short distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62245172A JPS6486084A (en) 1987-09-29 1987-09-29 Radar sensor for short distance

Publications (1)

Publication Number Publication Date
JPS6486084A true JPS6486084A (en) 1989-03-30

Family

ID=17129676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62245172A Pending JPS6486084A (en) 1987-09-29 1987-09-29 Radar sensor for short distance

Country Status (1)

Country Link
JP (1) JPS6486084A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177190A (en) * 1990-11-13 1992-06-24 Honda Motor Co Ltd Fm radar
JPH04259874A (en) * 1991-02-15 1992-09-16 Honda Motor Co Ltd FM radar
US7598903B2 (en) 2006-05-23 2009-10-06 Korea Advanced Institute Of Science And Technology Sensor for measuring distance and method for measuring distance using the sensor
JP2011223505A (en) * 2010-04-14 2011-11-04 Mitsubishi Electric Corp Delay time measurement method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177190A (en) * 1990-11-13 1992-06-24 Honda Motor Co Ltd Fm radar
JPH04259874A (en) * 1991-02-15 1992-09-16 Honda Motor Co Ltd FM radar
US7598903B2 (en) 2006-05-23 2009-10-06 Korea Advanced Institute Of Science And Technology Sensor for measuring distance and method for measuring distance using the sensor
JP2011223505A (en) * 2010-04-14 2011-11-04 Mitsubishi Electric Corp Delay time measurement method

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