JPS56145408A - Collecting method for underwater observation equipment - Google Patents

Collecting method for underwater observation equipment

Info

Publication number
JPS56145408A
JPS56145408A JP4758680A JP4758680A JPS56145408A JP S56145408 A JPS56145408 A JP S56145408A JP 4758680 A JP4758680 A JP 4758680A JP 4758680 A JP4758680 A JP 4758680A JP S56145408 A JPS56145408 A JP S56145408A
Authority
JP
Japan
Prior art keywords
mother ship
observation equipment
point
floating
ship
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
JP4758680A
Other languages
Japanese (ja)
Inventor
Toshio Akao
Shigeru Okita
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.)
Kanadevia Corp
Original Assignee
Hitachi Zosen Corp
Hitachi Shipbuilding and Engineering 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 Hitachi Zosen Corp, Hitachi Shipbuilding and Engineering Co Ltd filed Critical Hitachi Zosen Corp
Priority to JP4758680A priority Critical patent/JPS56145408A/en
Publication of JPS56145408A publication Critical patent/JPS56145408A/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
    • G01S15/88—Sonar systems specially adapted for specific applications

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To shorten collection time greatly and to avoid the loss of an underwater observation equipment by automatically floating the underwater observation equipment very closely to a mother ship as the mother ship approaches. CONSTITUTION:Observation equipment 1 is at point 0, optional coordinate axis X is set including point 0, and the range of the signal tone origination of transmitter 2 is expressed by a circle with radius R on the sea surface. Therefore, when a motor ship arrives at certain point P on this circle, it receives an echo tone. Then, vertical height D at point P is measured by a hydraulic pressure gauge, etc., and distance S between points O and P is also measured by using the time difference between a transmitted sound and received sound. Assuming that the mother ship moves at a constant speed, its speed is found by a Doppler shift from the difference in frequency between the transmitted and received sounds. Further, minimum distance (d) to the mother ship is calculated to set a means of floating closely to the mother ship and the azimuth and time of the floating, and the observation equipment is floated near the mother ship and then collected.
JP4758680A 1980-04-10 1980-04-10 Collecting method for underwater observation equipment Pending JPS56145408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4758680A JPS56145408A (en) 1980-04-10 1980-04-10 Collecting method for underwater observation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4758680A JPS56145408A (en) 1980-04-10 1980-04-10 Collecting method for underwater observation equipment

Publications (1)

Publication Number Publication Date
JPS56145408A true JPS56145408A (en) 1981-11-12

Family

ID=12779350

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4758680A Pending JPS56145408A (en) 1980-04-10 1980-04-10 Collecting method for underwater observation equipment

Country Status (1)

Country Link
JP (1) JPS56145408A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312179B1 (en) 1993-12-14 2001-11-06 L'oreal Device for applying a pasty product, particularly a cosmetic product such as lipstick

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6312179B1 (en) 1993-12-14 2001-11-06 L'oreal Device for applying a pasty product, particularly a cosmetic product such as lipstick

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