JPS56141572A - Reflected echo identifying device - Google Patents

Reflected echo identifying device

Info

Publication number
JPS56141572A
JPS56141572A JP4441880A JP4441880A JPS56141572A JP S56141572 A JPS56141572 A JP S56141572A JP 4441880 A JP4441880 A JP 4441880A JP 4441880 A JP4441880 A JP 4441880A JP S56141572 A JPS56141572 A JP S56141572A
Authority
JP
Japan
Prior art keywords
frequency
transmission
underwater sailing
reception
target
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
JP4441880A
Other languages
Japanese (ja)
Inventor
Kenji Iwata
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP4441880A priority Critical patent/JPS56141572A/en
Publication of JPS56141572A publication Critical patent/JPS56141572A/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
    • G01S15/08—Systems for measuring distance only
    • G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S15/102—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics
    • G01S15/107—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves using transmission of pulses having some particular characteristics using frequency agility of carrier wave

Abstract

PURPOSE:To identify other underwater sailing objects and a target by holding various kinds of transmission and reception frequencies to each of underwater sailing bodies, changing the transmission-reception frequencies in various ways and arranging the device in such a manner that the frequency signals deviated from the predetermined reception frequency bands are not received. CONSTITUTION:In the case of tracking a target with plural underwater sailing bodies, a transmission frequency oscillator which selects and sets the transmission frequency fi for every underwater sailing body prior to emission and such a reception frequency band limiter which detects the frequency f'i of the reflected echo signals received after the emission and transmits only the reception signals of the frequency bands 1-3 conforming to the transmission frequency fi are provided. With such constitution, the transmission frequencies of the respective underwater sailing bodies are prevented from becoming the same. Hence, wrong identification of the underwater sailing bodies as a target does not occur, and the target is captured surely.
JP4441880A 1980-04-04 1980-04-04 Reflected echo identifying device Pending JPS56141572A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4441880A JPS56141572A (en) 1980-04-04 1980-04-04 Reflected echo identifying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4441880A JPS56141572A (en) 1980-04-04 1980-04-04 Reflected echo identifying device

Publications (1)

Publication Number Publication Date
JPS56141572A true JPS56141572A (en) 1981-11-05

Family

ID=12690938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4441880A Pending JPS56141572A (en) 1980-04-04 1980-04-04 Reflected echo identifying device

Country Status (1)

Country Link
JP (1) JPS56141572A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6259881A (en) * 1985-09-10 1987-03-16 Furuno Electric Co Ltd Fish school locater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960253A (en) * 1972-10-07 1974-06-11

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960253A (en) * 1972-10-07 1974-06-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6259881A (en) * 1985-09-10 1987-03-16 Furuno Electric Co Ltd Fish school locater

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