Method and apparatus for forming a pseudo-range model
First Claim
1. A method of forming a pseudo-range model, comprising:
- receiving satellite position information for a plurality of satellites;
receiving an approximate position of a mobile device;
computing at least one set of ranges from the mobile device to the plurality of satellites using the approximate location and the satellite position information; and
forming a pseudo-range model from the at least one set of ranges, the pseudo-range model having pseudorange information and pseudorange rate information.
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Abstract
A method and apparatus for locating mobile device over a broad coverage area using a wireless communications link that may have large and unknown latency. The apparatus comprises at least one mobile device, a reference network, a position server, a wireless carrier, and a location requester. The mobile device is in communication with the wireless carrier and receives global positioning system (GPS) signals from a plurality of satellites in the GPS satellite constellation. The reference network is coupled to the position server and provides GPS data. The mobile receiver receives GPS signals, performs rudimentary signal processing and transmits the processed signals to the wireless carrier. The wireless carrier passes the signals on to the position server. The position server processes the mobile receiver'"'"'s GPS data and the reference network ephemeris data to identify the location of the mobile receiver. The location is sent to the location requester.
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Citations
20 Claims
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1. A method of forming a pseudo-range model, comprising:
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receiving satellite position information for a plurality of satellites;
receiving an approximate position of a mobile device;
computing at least one set of ranges from the mobile device to the plurality of satellites using the approximate location and the satellite position information; and
forming a pseudo-range model from the at least one set of ranges, the pseudo-range model having pseudorange information and pseudorange rate information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for forming a pseudo-range model, comprising:
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a mobile device for receiving signals from a plurality of satellites; and
a server being in wireless communication with the mobile device;
where the server is configured to compute at least one set of ranges from the mobile device to the plurality of satellites using an approximate location of the mobile device and satellite position information; and
where the server is configured to form a pseudo-range model from the at least one set of ranges, the pseudo-range model having pseudorange information and pseudorange rate information. - View Dependent Claims (10, 11, 12)
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13. An apparatus for forming a pseudo-range model, comprising:
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means for receiving satellite position information for a plurality of satellites, means for receiving an approximate position of a mobile device;
means for computing at least one set of ranges from the mobile device to the plurality of satellites using the approximate location and the satellite position information; and
means for forming a pseudo-range model from the at least one set of ranges, the pseudo-range model having pseudorange information and pseudorange rate information. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification