GB2413448B - Positioning system - Google Patents

Positioning system

Info

Publication number
GB2413448B
GB2413448B GB0408683A GB0408683A GB2413448B GB 2413448 B GB2413448 B GB 2413448B GB 0408683 A GB0408683 A GB 0408683A GB 0408683 A GB0408683 A GB 0408683A GB 2413448 B GB2413448 B GB 2413448B
Authority
GB
United Kingdom
Prior art keywords
signal
positioning system
delay
transmitter
information relating
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 - Fee Related
Application number
GB0408683A
Other versions
GB0408683D0 (en
GB2413448A (en
Inventor
Markus Guenther Kuhn
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.)
Cambridge University Technical Services Ltd CUTS
Original Assignee
Cambridge University Technical Services Ltd CUTS
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 Cambridge University Technical Services Ltd CUTS filed Critical Cambridge University Technical Services Ltd CUTS
Priority to GB0408683A priority Critical patent/GB2413448B/en
Publication of GB0408683D0 publication Critical patent/GB0408683D0/en
Publication of GB2413448A publication Critical patent/GB2413448A/en
Application granted granted Critical
Publication of GB2413448B publication Critical patent/GB2413448B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/02—Details of the space or ground control segments
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/21—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
    • G01S19/215—Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service issues related to spoofing
    • 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
    • G01S5/145—Using a supplementary range measurement, e.g. based on pseudo-range measurements

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A GPS-type positioning system comprises a plurality of transmitters and at least one receiver is described. Each transmitter, transmits a first signal. After a delay, a second signal is transmitted, which second signal includes information relating to the first signal. The first signal may comprise a spread spectrum signal and the second signal may include information relating to the spreading sequence used in the first signal. A receiver receives and buffers the first signal and, after a delay, receives the second signal which it uses to identify and separate information in the first signal. The system can be resistant to spoofing by an interfering enemy transmitter,
GB0408683A 2004-04-19 2004-04-19 Positioning system Expired - Fee Related GB2413448B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0408683A GB2413448B (en) 2004-04-19 2004-04-19 Positioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0408683A GB2413448B (en) 2004-04-19 2004-04-19 Positioning system

Publications (3)

Publication Number Publication Date
GB0408683D0 GB0408683D0 (en) 2004-05-19
GB2413448A GB2413448A (en) 2005-10-26
GB2413448B true GB2413448B (en) 2007-03-07

Family

ID=32321072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0408683A Expired - Fee Related GB2413448B (en) 2004-04-19 2004-04-19 Positioning system

Country Status (1)

Country Link
GB (1) GB2413448B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8930556B2 (en) * 2011-09-05 2015-01-06 The Boeing Company Authentication based on random bits in satellite navigation messages
EP2824480A1 (en) * 2013-07-09 2015-01-14 The European Union, represented by the European Commission Digitally-signed satellite radio-navigation signals

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6332070B1 (en) * 1998-08-14 2001-12-18 Robert Bosch Gmbh Method and data receiver device for reception of a radio signal containing correction data for a global navigation satellite system
US20020135510A1 (en) * 2001-02-27 2002-09-26 Bruno Ronald C. Hybrid system for position determination by a mobile communications terminal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6332070B1 (en) * 1998-08-14 2001-12-18 Robert Bosch Gmbh Method and data receiver device for reception of a radio signal containing correction data for a global navigation satellite system
US20020135510A1 (en) * 2001-02-27 2002-09-26 Bruno Ronald C. Hybrid system for position determination by a mobile communications terminal

Also Published As

Publication number Publication date
GB0408683D0 (en) 2004-05-19
GB2413448A (en) 2005-10-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110419