JPS56137169A - Direction measuring device - Google Patents

Direction measuring device

Info

Publication number
JPS56137169A
JPS56137169A JP4084980A JP4084980A JPS56137169A JP S56137169 A JPS56137169 A JP S56137169A JP 4084980 A JP4084980 A JP 4084980A JP 4084980 A JP4084980 A JP 4084980A JP S56137169 A JPS56137169 A JP S56137169A
Authority
JP
Japan
Prior art keywords
phase
phase difference
signal
detector
instantaneous
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
JP4084980A
Other languages
Japanese (ja)
Other versions
JPS6014310B2 (en
Inventor
Toshiyuki Matsuura
Takanao Suzuki
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 JP4084980A priority Critical patent/JPS6014310B2/en
Publication of JPS56137169A publication Critical patent/JPS56137169A/en
Publication of JPS6014310B2 publication Critical patent/JPS6014310B2/en
Expired 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/50—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being pulse modulated and the time difference of their arrival being measured

Abstract

PURPOSE:To enable the direction measurement with high speed and accuracy through correcting the phase difference, by digital processing incoming signal and storing it through obtaining the instantaneous aximuth and arrival bearing. CONSTITUTION:Based on the phase difference between signals obtained through the scanning of a plurality of antenna elements, the direction of incoming of received electromagnetic waves is detected. In this case, in the directional detector 7, IF signal is converted 11 into pulse, the reference phase signal and the phase are compared with the phase detector 12, the control signal of the antenna element is referenced with the phase average device 14 from the result of comparison to calculate the average phase, the phase difference of the antenna elements is detected at the phase difference detector 15 and it is stored in the memory 19. Further, the phase difference data is suitably read out from the memory 19, the instantaneous direction at switching of antenna is obtained by the directional operator 17 with the correlativity calculation 16, and average processing over the measuring time given to the instantaneous direction with the direction processor 18 is made to obtain the arrival bearing.
JP4084980A 1980-03-28 1980-03-28 Direction measuring device Expired JPS6014310B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4084980A JPS6014310B2 (en) 1980-03-28 1980-03-28 Direction measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4084980A JPS6014310B2 (en) 1980-03-28 1980-03-28 Direction measuring device

Publications (2)

Publication Number Publication Date
JPS56137169A true JPS56137169A (en) 1981-10-26
JPS6014310B2 JPS6014310B2 (en) 1985-04-12

Family

ID=12592018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4084980A Expired JPS6014310B2 (en) 1980-03-28 1980-03-28 Direction measuring device

Country Status (1)

Country Link
JP (1) JPS6014310B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58180967A (en) * 1982-04-16 1983-10-22 Toshiba Corp Bearing measuring apparatus
JPS59206786A (en) * 1983-05-11 1984-11-22 Koden Electronics Co Ltd Radio direction finder
JPS60135876A (en) * 1983-12-26 1985-07-19 Koden Electronics Co Ltd Display device of direction finder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58180967A (en) * 1982-04-16 1983-10-22 Toshiba Corp Bearing measuring apparatus
JPH0421826B2 (en) * 1982-04-16 1992-04-14 Tokyo Shibaura Electric Co
JPS59206786A (en) * 1983-05-11 1984-11-22 Koden Electronics Co Ltd Radio direction finder
JPH0156388B2 (en) * 1983-05-11 1989-11-29 Koden Electronics Co Ltd
JPS60135876A (en) * 1983-12-26 1985-07-19 Koden Electronics Co Ltd Display device of direction finder
JPH0427509B2 (en) * 1983-12-26 1992-05-12 Koden Electronics Co Ltd

Also Published As

Publication number Publication date
JPS6014310B2 (en) 1985-04-12

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