JPS5282450A - Active sonar - Google Patents

Active sonar

Info

Publication number
JPS5282450A
JPS5282450A JP15876175A JP15876175A JPS5282450A JP S5282450 A JPS5282450 A JP S5282450A JP 15876175 A JP15876175 A JP 15876175A JP 15876175 A JP15876175 A JP 15876175A JP S5282450 A JPS5282450 A JP S5282450A
Authority
JP
Japan
Prior art keywords
active sonar
submarine
noises
reverberation
subtracting
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
JP15876175A
Other languages
Japanese (ja)
Inventor
Masao Kumano
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 JP15876175A priority Critical patent/JPS5282450A/en
Publication of JPS5282450A publication Critical patent/JPS5282450A/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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/523—Details of pulse systems
    • G01S7/526—Receivers
    • G01S7/527—Extracting wanted echo signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To effectively capture the end echo included in submarine noises and reverberation by subjecting the received supersonic waves to frequency analysis, and subtracting the value affected by the submarine noises from the analysis results followed by amplitude processing.
JP15876175A 1975-12-29 1975-12-29 Active sonar Pending JPS5282450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15876175A JPS5282450A (en) 1975-12-29 1975-12-29 Active sonar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15876175A JPS5282450A (en) 1975-12-29 1975-12-29 Active sonar

Publications (1)

Publication Number Publication Date
JPS5282450A true JPS5282450A (en) 1977-07-09

Family

ID=15678752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15876175A Pending JPS5282450A (en) 1975-12-29 1975-12-29 Active sonar

Country Status (1)

Country Link
JP (1) JPS5282450A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04118575A (en) * 1990-09-10 1992-04-20 Oki Electric Ind Co Ltd Measuring elevation angle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04118575A (en) * 1990-09-10 1992-04-20 Oki Electric Ind Co Ltd Measuring elevation angle

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