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JPS56118683A - Receiving system of scanning sonar - Google Patents

Receiving system of scanning sonar

Info

Publication number
JPS56118683A
JPS56118683A JP2057280A JP2057280A JPS56118683A JP S56118683 A JPS56118683 A JP S56118683A JP 2057280 A JP2057280 A JP 2057280A JP 2057280 A JP2057280 A JP 2057280A JP S56118683 A JPS56118683 A JP S56118683A
Authority
JP
Japan
Prior art keywords
vibrators
neighbouring
signals
constitution
output
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
JP2057280A
Other languages
Japanese (ja)
Other versions
JPS6226429B2 (en
Inventor
Fukutaro Takahashi
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.)
Kaijo Denki Co Ltd
Marine Instr Co Ltd
Original Assignee
Kaijo Denki Co Ltd
Marine Instr 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 Kaijo Denki Co Ltd, Marine Instr Co Ltd filed Critical Kaijo Denki Co Ltd
Priority to JP2057280A priority Critical patent/JPS56118683A/en
Publication of JPS56118683A publication Critical patent/JPS56118683A/en
Publication of JPS6226429B2 publication Critical patent/JPS6226429B2/ja
Granted 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
    • G01S7/534—Details of non-pulse systems

Landscapes

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

Abstract

PURPOSE:To obtain the echo signal with sufficient intensity in a simple constitution by attenuating one of the outputs of two neighbouring receiving elements by a specified amount, increasing the other by a specified amount, performing mixing process and the like, and correcting the receiving sensitivity. CONSTITUTION:Vibrators Vn...and V'n-1... forming a receiving element group EL are sequentially switched via switches. The signals are received by the neighbouring vibrators Vn... and V'n-1... and supplied to attenuators ATT1A... wherein the signals are attenuated from 100% to 0% of a ganged variable attenuator group GATT and to attenuators ATT2B... wherein the signals are increased from 0% to 100%. The outputs of the GATT are mixed and processed in mixers M1.... In this constitution, e.g., the output E1A of the attenuator ATT1A is virtually shifted to the output E2B, and the phase phi2 is shifted to phi1 by 3 steps. In this way, the vector component of the output is generated. This circuit is actually equivalent to a circuit wherein two additional vibrators are arranged between the neighbouring vibrators. Therefore, the receiving sensitivity can be corrected by the simple constitution, and the sufficiently intense echo signal can be formed.
JP2057280A 1980-02-22 1980-02-22 Receiving system of scanning sonar Granted JPS56118683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2057280A JPS56118683A (en) 1980-02-22 1980-02-22 Receiving system of scanning sonar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2057280A JPS56118683A (en) 1980-02-22 1980-02-22 Receiving system of scanning sonar

Publications (2)

Publication Number Publication Date
JPS56118683A true JPS56118683A (en) 1981-09-17
JPS6226429B2 JPS6226429B2 (en) 1987-06-09

Family

ID=12030902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2057280A Granted JPS56118683A (en) 1980-02-22 1980-02-22 Receiving system of scanning sonar

Country Status (1)

Country Link
JP (1) JPS56118683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02173586A (en) * 1988-12-27 1990-07-05 Marine Instr Co Ltd Directional beam synthesizing circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53701A (en) * 1976-06-22 1978-01-06 Crosfield Electronics Ltd Image reproducing method and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53701A (en) * 1976-06-22 1978-01-06 Crosfield Electronics Ltd Image reproducing method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02173586A (en) * 1988-12-27 1990-07-05 Marine Instr Co Ltd Directional beam synthesizing circuit

Also Published As

Publication number Publication date
JPS6226429B2 (en) 1987-06-09

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