GB201011895D0 - Navigation system - Google Patents

Navigation system

Info

Publication number
GB201011895D0
GB201011895D0 GB201011895A GB201011895A GB201011895D0 GB 201011895 D0 GB201011895 D0 GB 201011895D0 GB 201011895 A GB201011895 A GB 201011895A GB 201011895 A GB201011895 A GB 201011895A GB 201011895 D0 GB201011895 D0 GB 201011895D0
Authority
GB
United Kingdom
Prior art keywords
receiver
transmitters
operable
relative position
frequency
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.)
Withdrawn
Application number
GB201011895A
Other versions
GB2491332A (en
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.)
PEEPO GPS Ltd
Original Assignee
PEEPO GPS 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 PEEPO GPS Ltd filed Critical PEEPO GPS Ltd
Priority to GB201011895A priority Critical patent/GB2491332A/en
Publication of GB201011895D0 publication Critical patent/GB201011895D0/en
Publication of GB2491332A publication Critical patent/GB2491332A/en
Withdrawn legal-status Critical Current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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/08—Systems for determining direction or position line
    • G01S1/20—Systems for determining direction or position line using a comparison of transit time of synchronised signals transmitted from non-directional antennas or antenna systems spaced apart, i.e. path-difference systems
    • 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
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems

Abstract

A navigation system for a pedestrian, the system comprising a plurality of transmitters 12a, 12b, 12c each having a location, and each of which is operable to transmit an identification signal being unique to the transmitter concerned, and having a frequency and phase combination unique to the transmitter concerned, the frequency being less than 300kHz, i.e. within a LF, VLF or ULF band; a mobile receiver 18 operable to receive the respective identification signals from the transmitters, and to determine a relative position of the receiver with respect to the plurality of transmitters; and a guidance unit associated with the receiver, and operable to receive relative position information from the receiver, and to output direction information derived from such relative position information in combination with stored mapping information. This type of system could be used by pedestrians that are blind or visually impaired over a range of environments.
GB201011895A 2010-07-15 2010-07-15 An ultra low frequency navigation system Withdrawn GB2491332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201011895A GB2491332A (en) 2010-07-15 2010-07-15 An ultra low frequency navigation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201011895A GB2491332A (en) 2010-07-15 2010-07-15 An ultra low frequency navigation system

Publications (2)

Publication Number Publication Date
GB201011895D0 true GB201011895D0 (en) 2010-09-01
GB2491332A GB2491332A (en) 2012-12-05

Family

ID=42734976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201011895A Withdrawn GB2491332A (en) 2010-07-15 2010-07-15 An ultra low frequency navigation system

Country Status (1)

Country Link
GB (1) GB2491332A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396918A (en) * 1981-03-06 1983-08-02 The United States Of America As Represented By The Administrator Of The National Aeronautics & Space Administration Low-frequency radio navigation system
CA2479506A1 (en) * 2002-03-20 2003-09-25 Visuaide Inc. Wireless handheld portable navigation system and method for visually impaired pedestrians
JP2004028847A (en) * 2002-06-27 2004-01-29 Mitsubishi Heavy Ind Ltd Positioning system using ultralow frequency radio wave, positioning method, and mobile station
US8981996B2 (en) * 2005-09-27 2015-03-17 Qualcomm Incorporated Position location using transmitters with timing offset and phase adjustment
US7626544B2 (en) * 2006-10-17 2009-12-01 Ut-Battelle, Llc Robust low-frequency spread-spectrum navigation system

Also Published As

Publication number Publication date
GB2491332A (en) 2012-12-05

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
S20A Reinstatement of application (sect. 20a/patents act 1977)

Free format text: REQUEST FOR REINSTATEMENT FILED

Effective date: 20120621

Free format text: REQUEST FOR REINSTATEMENT ALLOWED

Effective date: 20120704

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)