METHOD AND APPARATUS FOR USING GPS SATELLITE STATE COMPUTATIONS IN GLONASS MEASUREMENT PROCESSING
First Claim
1. A method comprising:
- receiving satellite state information for a first satellite in a first satellite positioning system, and for a second satellite in a different second satellite positioning system; and
synthesizing the satellite state information for both the first and second satellites into a common record format of satellite orbit or ephemeris information.
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Abstract
The present invention is related to location positioning systems, and more particularly, to a method and apparatus for using satellite state information from two or more different satellite systems in navigation processing. According to one aspect, it makes use of GPS extended ephemeris functionality to produce satellite state vector estimates for GLONASS satellites. These satellite state vector estimates can be used alone or in combination with GPS satellite vectors to provide updates to the receiver'"'"'s navigation processing. According to further aspects, the GLONASS satellite position and trajectory information is extrapolated with a GPS gravity model rather than the GLONASS model, thereby allowing it to be extrapolated more accurately and for longer periods of time than the GLONASS model allows.
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Citations
18 Claims
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1. A method comprising:
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receiving satellite state information for a first satellite in a first satellite positioning system, and for a second satellite in a different second satellite positioning system; and synthesizing the satellite state information for both the first and second satellites into a common record format of satellite orbit or ephemeris information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus, comprising:
a common location manager that includes; an input coupled to receive satellite state information for a first satellite in a first satellite positioning system, an input coupled to receive satellite state information for a second satellite in a different second satellite positioning system; and an engine adapted to synthesize the satellite state information for both the first and second satellites into a common record format of satellite orbit or ephemeris information.
Specification