RDOP surface for GPS relative positioning

Details RDOP surface for GPS relative positioning RDOP surface for GPS relative positioning

1997-06-27

2000-05-02

Tarcza, Thomas H.

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

Directive

Including a satellite

34235706, 701213, G01S 502, H04B 7185

Patent

active

060578009

ABSTRACT:
The effect of changing satellite geometry on the achievable accuracy of GPS relative positioning under the full GPS constellation has been researched. A mathematical model has been developed for the quantitative analysis of the accuracy of GPS relative positioning with respect to the changing satellite/station configuration, observation starting time and session length. A method based on modeling the relative dilution of precision (RDOP) has been developed for the optimum design of GPS relative positioning with carrier phase observable. The RDOP surface, a mathematical surface, has been generated based on the broadcast almanac file. The optimum observation windows, optimum session starting time and optimum observation session length have been derived from the study of the RDOP surface.

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