JPS53145669A - Azimuth signal processing system - Google Patents

Azimuth signal processing system

Info

Publication number
JPS53145669A
JPS53145669A JP6062677A JP6062677A JPS53145669A JP S53145669 A JPS53145669 A JP S53145669A JP 6062677 A JP6062677 A JP 6062677A JP 6062677 A JP6062677 A JP 6062677A JP S53145669 A JPS53145669 A JP S53145669A
Authority
JP
Japan
Prior art keywords
signal processing
processing system
azimuth signal
azimuth
variation
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
JP6062677A
Other languages
Japanese (ja)
Inventor
Isao Kaneko
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 JP6062677A priority Critical patent/JPS53145669A/en
Publication of JPS53145669A publication Critical patent/JPS53145669A/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
    • 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
    • G01S3/80—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 ultrasonic, sonic or infrasonic waves
    • G01S3/802—Systems for determining direction or deviation from predetermined direction

Abstract

PURPOSE:To improve the accuracy in azimuth measurement by determing the time and spectrum frequency in accordance with the levels of the ratios between the variation in azimuth of an underwater sound generating body and the variation in the spectrum frequency and in spectrum level between the sound generator and the underwater noises.
JP6062677A 1977-05-24 1977-05-24 Azimuth signal processing system Pending JPS53145669A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6062677A JPS53145669A (en) 1977-05-24 1977-05-24 Azimuth signal processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6062677A JPS53145669A (en) 1977-05-24 1977-05-24 Azimuth signal processing system

Publications (1)

Publication Number Publication Date
JPS53145669A true JPS53145669A (en) 1978-12-19

Family

ID=13147688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6062677A Pending JPS53145669A (en) 1977-05-24 1977-05-24 Azimuth signal processing system

Country Status (1)

Country Link
JP (1) JPS53145669A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5571960A (en) * 1978-11-25 1980-05-30 Tech Res & Dev Inst Of Japan Def Agency Direction finder
JPH09304500A (en) * 1996-05-13 1997-11-28 Tech Res & Dev Inst Of Japan Def Agency Signal detection system
JP2007078450A (en) * 2005-09-13 2007-03-29 Mitsubishi Electric Corp Direction finder
JP2018091647A (en) * 2016-11-30 2018-06-14 日本電気株式会社 Signal processing apparatus, orientation calculation method and orientation calculation program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5571960A (en) * 1978-11-25 1980-05-30 Tech Res & Dev Inst Of Japan Def Agency Direction finder
JPS5723231B2 (en) * 1978-11-25 1982-05-18
JPH09304500A (en) * 1996-05-13 1997-11-28 Tech Res & Dev Inst Of Japan Def Agency Signal detection system
JP2007078450A (en) * 2005-09-13 2007-03-29 Mitsubishi Electric Corp Direction finder
JP2018091647A (en) * 2016-11-30 2018-06-14 日本電気株式会社 Signal processing apparatus, orientation calculation method and orientation calculation program

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