Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Patent
1997-12-18
2000-07-04
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
3423571, 701214, H04B 7185, G01S 502
Patent
active
060845449
ABSTRACT:
A method for determining the location of a satellite receiver. The method begins by selecting a trial time for use in calculating a presumed location of the receiver using at least four satellites. The presumed location is calculated based on the selected trial time. A first range from the presumed location to a fifth satellite is calculated and a second range from the presumed location to the fifth satellite is measured. A comparison is then made between the first range to the second range. If the first range is unequal to the second range the presumed location is not the actual location. A new trial time is selected and the method is repeated. When the first range and the second range are substantially the same then the presumed location is the actual location.
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patent: 5751244 (1998-05-01), Huston et al.
patent: 5831576 (1998-11-01), Sheynblat
PCT International Search Report, Apr. 27, 1999, PCT/US 98/26520.
Blum Theodore M.
Ericsson Inc.
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