GB1056620A - Method and apparatus for geodetic direction-finding - Google Patents

Method and apparatus for geodetic direction-finding

Info

Publication number
GB1056620A
GB1056620A GB5300864A GB5300864A GB1056620A GB 1056620 A GB1056620 A GB 1056620A GB 5300864 A GB5300864 A GB 5300864A GB 5300864 A GB5300864 A GB 5300864A GB 1056620 A GB1056620 A GB 1056620A
Authority
GB
United Kingdom
Prior art keywords
receiver
photo
transmitter
optical axis
location
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.)
Expired
Application number
GB5300864A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1056620A publication Critical patent/GB1056620A/en
Expired 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
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/26—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object
    • G01C3/28—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane
    • G01C3/30—Measuring distances in line of sight; Optical rangefinders using a parallactic triangle with fixed angles and a base of variable length, at, near, or formed by the object with provision for reduction of the distance into the horizontal plane with adaptation to the measurement of the height of an object, e.g. tacheometers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

1,056,620. Photo-electric direction-finding systems. F. FRUNGEL. Dec. 31, 1964 [Jan. 3, 1964], No. 53008/64. Heading H4D. In a system for determining the relative bearing of two locations not in a direct line of sight, ultra-violet pulses of wavelength between 1800 Š and 2500 Š are transmitted in a narrow beam from one location and after atmospheric scattering are detected by a receiver, at the other location, whose optical axis is directed so as to intersect the transmitted beam. A transmitter T comprises a gas-filled flash-tube 18 which is sparked periodically, providing a high-intensity source of ultra-violet radiation which is collimated by a mirror system 21. A receiver R comprises a mirror system 14, 15 directing incident radiation through an adjustable-width slit 13 on to a photo-cell or photo-multiplier 12 triggering a monostable circuit. The receiver R is rendered insensitive to daylight by a filter between the mirror system and photo-detector 12. In a preferred method of use the receiver optical axis is directed vertically and the transmitter T, whose optical axis makes a small angle with the horizon, is rotated about a vertical axis until a signal is obtained from photo-detector 12, this signal being relayed back to the transmitter location by radio or telephone. A coarse measurement of bearing is made with slit 13 wide open, and a precision measurement is then made by reducing the slit width. The apparatus may be used with conventional theodolites. Examples of materials used in the construction of the transmitter T and receiver R are given. In an alternative method, the positions of the transmitter T and receiver R are reversed.
GB5300864A 1964-01-03 1964-12-31 Method and apparatus for geodetic direction-finding Expired GB1056620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964F0041667 DE1294693B (en) 1964-01-03 1964-01-03 Geodetic angle measurement method

Publications (1)

Publication Number Publication Date
GB1056620A true GB1056620A (en) 1967-01-25

Family

ID=7098765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5300864A Expired GB1056620A (en) 1964-01-03 1964-12-31 Method and apparatus for geodetic direction-finding

Country Status (2)

Country Link
DE (1) DE1294693B (en)
GB (1) GB1056620A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8801278A (en) * 1987-05-19 1995-03-01 British Aerospace Monitoring system.
GB2282504A (en) * 1987-05-19 1995-04-05 British Aerospace Surveillance system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL31603C (en) * 1930-07-02
DE819461C (en) * 1949-09-15 1951-11-19 Askania Werke Ag Installation on geodetic devices
BE531515A (en) * 1953-09-14

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8801278A (en) * 1987-05-19 1995-03-01 British Aerospace Monitoring system.
GB2282504A (en) * 1987-05-19 1995-04-05 British Aerospace Surveillance system
GB2282504B (en) * 1987-05-19 1995-08-09 British Aerospace Surveillance system
US5468963A (en) * 1987-05-19 1995-11-21 British Aerospace Public Limited Company Surveillance system
FR2734897A1 (en) * 1987-05-19 1996-12-06 British Aerospace SURVEILLANCE SYSTEM
BE1014989A4 (en) * 1987-05-19 2004-08-03 British Aerospace Surveillance system.

Also Published As

Publication number Publication date
DE1294693B (en) 1969-05-08

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