GB1354667A - Location systems - Google Patents

Location systems

Info

Publication number
GB1354667A
GB1354667A GB1354667DA GB1354667A GB 1354667 A GB1354667 A GB 1354667A GB 1354667D A GB1354667D A GB 1354667DA GB 1354667 A GB1354667 A GB 1354667A
Authority
GB
United Kingdom
Prior art keywords
location systems
mullard
heading
feb
stations
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
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.)
Philips Components Ltd
Original Assignee
Mullard 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
Priority claimed from GB3113370A external-priority patent/GB1262223A/en
Application filed by Mullard Ltd filed Critical Mullard Ltd
Publication of GB1354667A publication Critical patent/GB1354667A/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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • 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
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/72—Diversity systems specially adapted for direction-finding

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

1354667 Radio navigation MULLARD Ltd 7 Feb 1973 6041/73 Addition to 1262223 Heading H4D The system of the parent Specification 1,262,223 is protected against errors due to signal reflections by utilizing a space-diversity system at at least one of the stations.
GB1354667D 1970-06-26 1973-02-07 Location systems Expired GB1354667A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3113370A GB1262223A (en) 1970-06-26 1970-06-26 Improvements in or relating to location systems
GB604173 1973-02-07

Publications (1)

Publication Number Publication Date
GB1354667A true GB1354667A (en) 1974-06-05

Family

ID=26240360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1354667D Expired GB1354667A (en) 1970-06-26 1973-02-07 Location systems

Country Status (1)

Country Link
GB (1) GB1354667A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1365613A1 (en) * 2002-05-22 2003-11-26 Cambridge Positioning Systems Limited Location system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1365613A1 (en) * 2002-05-22 2003-11-26 Cambridge Positioning Systems Limited Location system and method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees