Method for improving GPS integrity and detecting multipath...

Details Method for improving GPS integrity and detecting multipath... Method for improving GPS integrity and detecting multipath...

2007-06-19

2007-06-19

Jeanglaude, Gertrude A. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

C701S207000, C701S213000, C701S220000, C342S357490

Reexamination Certificate

active

11495010

ABSTRACT:
A method for checking the integrity of GPS measurements for a moving vehicle includes determining a first inter-vehicle distance between a first vehicle and a second vehicle based on GPS measurements obtained at both vehicles, independently determining a second inter-vehicle distance based on relative motion of the first vehicle and the second vehicle obtained using INS sensors at both vehicles, and comparing the first and second inter-vehicle distances. The integrity of the GPS measurements are checked if the first and second inter-vehicle distances are nearly equivalent. Methods for error detection and for mapping GPS multipath levels at each point in a vicinity for an entire range of satellite constellations are also described.

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