JPS57101779A - Scanning sonar - Google Patents

Scanning sonar

Info

Publication number
JPS57101779A
JPS57101779A JP17828780A JP17828780A JPS57101779A JP S57101779 A JPS57101779 A JP S57101779A JP 17828780 A JP17828780 A JP 17828780A JP 17828780 A JP17828780 A JP 17828780A JP S57101779 A JPS57101779 A JP S57101779A
Authority
JP
Japan
Prior art keywords
circuit
signal
directivity
output
inputted
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
JP17828780A
Other languages
Japanese (ja)
Inventor
Hiroshi Iino
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.)
Furuno Electric Co Ltd
Original Assignee
Furuno 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 Furuno Electric Co Ltd filed Critical Furuno Electric Co Ltd
Priority to JP17828780A priority Critical patent/JPS57101779A/en
Publication of JPS57101779A publication Critical patent/JPS57101779A/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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/06—Systems determining the position data of a target
    • G01S15/42—Simultaneous measurement of distance and other co-ordinates

Abstract

PURPOSE:To obtain a continuous display picture which is excellent in a directivity, by utilizing a deviation of a reception signal frequency resulting from a Doppler shift due to continuous revolution of a directivity. CONSTITUTION:A signal, which composes an output generated by a group of oscillators arranged at a side of an oscillating drum A, is amplified by an amplification circuit B, and a given output at each point of time is switched and selected in order at a switch circuit C in synchronism with the revolution of an assignment direction to be inputted to a weight circuit D. The given output of the weight circuit D is inputted to a phase circuit E for correcting a phase difference of an incoming reflection wave. After it is then added to an addition circuit F, a signal for obtaining a continuous display picture, in which a signal at a side probe area is sufficiently suppressed and which is sufficiently suppressed and excellent in a directivity, is extracted from a composite signal by a beam-forming filter circuit R. A corresponding azimuth position is indicated in an indicator M corresponding to the strength of the output signal of the filter circuit R.
JP17828780A 1980-12-16 1980-12-16 Scanning sonar Pending JPS57101779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17828780A JPS57101779A (en) 1980-12-16 1980-12-16 Scanning sonar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17828780A JPS57101779A (en) 1980-12-16 1980-12-16 Scanning sonar

Publications (1)

Publication Number Publication Date
JPS57101779A true JPS57101779A (en) 1982-06-24

Family

ID=16045823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17828780A Pending JPS57101779A (en) 1980-12-16 1980-12-16 Scanning sonar

Country Status (1)

Country Link
JP (1) JPS57101779A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0199076U (en) * 1987-12-24 1989-07-03
JPH02216488A (en) * 1989-09-06 1990-08-29 Marine Instr Co Ltd Transmitting device for scanning sonar

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0199076U (en) * 1987-12-24 1989-07-03
JPH02216488A (en) * 1989-09-06 1990-08-29 Marine Instr Co Ltd Transmitting device for scanning sonar

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