Method for back-up dual-frequency navigation during brief periods when measurement data is unavailable on one of two frequencies

Details for Australian Patent Application No. 2005226022 (hide)

Owner NavCom Technology, Inc.

Inventors Hatch, Ronald R.; Pickett, Terence D.; Yang, Yunchun; Nelson, Frederick W.; Sharpe, Richard T.

Agent Davies Collison Cave

Pub. Number AU-A-2005226022

PCT Pub. Number WO2005/093454

Priority 10/800,178 12.03.04 US

Filing date 8 February 2005

Wipo publication date 6 October 2005

International Classifications

G01S 5/14 (2006.01) Position-fixing by co-ordinating two or more direction or position-line determinations - Determining absolute distances from a plurality of spaced points of known location

G01S 1/00 (2006.01) 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

Event Publications

24 August 2006 PCT application entered the National Phase

  PCT publication WO2005/093454 Priority application(s): WO2005/093454

13 December 2007 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(a). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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