Method and apparatus for geolocation determination

Details Method and apparatus for geolocation determination Method and apparatus for geolocation determination

2006-04-18

2008-10-14

Tarcza, Thomas H. (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

C342S357490

Reexamination Certificate

active

07436355

ABSTRACT:
The disclosure relates to method and apparatus for geolocation determination. In one embodiment, the disclosure relates to a method for detecting an erroneous satellite measurement by a receiver, including the steps of (a) determining an approximate location of the receiver; (b) for each of a plurality of satellites from which the receiver receives a signal: (i) determining a range difference between an expected range between the receiver and the satellite and a measured range between the receiver and the satellite; (ii) determining a median value of the range differences; (iii) determining an offset value between the range difference and the median value; (iv) comparing the offset value with a predetermined threshold to thereby detect an erroneous satellite measurement.

REFERENCES:
patent: 5808581 (1998-09-01), Braisted et al.
patent: 2005/0248687 (2005-11-01), Lee et al.
patent: 2007/0200752 (2007-08-01), van Diggelen et al.

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