Global positioning system (GPS) receiver and method of determining location of GPS receiver
First Claim
1. A Global Positioning System (GPS) receiver, comprising:
- a GPS receiving unit configured to receive navigation data from at least one visible satellite;
a decoder configured to decode the received navigation data to extract time and almanac information from the decoded navigation data;
a database configured to store satellite disposition information;
a satellite location determining unit configured to select at least one visible satellite candidate using the time information and the satellite disposition information, and to determine locations-in-space of the at least one visible satellite candidate with the almanac information; and
a navigation filter configured to calculate a pseudo-ranges from the at least one visible satellite and the selected at least one visible satellite candidate using the locations-in-space of the at least one visible satellite and the selected at least one visible satellite candidate, and to determine a location of the GPS receiver using the calculated pseudo-ranges.
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Accused Products
Abstract
A Global Positioning System (GPS) receiver includes a GPS receiving unit configured to receive navigation data from at least one visible satellite, a decoder configured to decode the received navigation data to extract time and almanac information from the decoded navigation data and a database configured to store satellite disposition information. A satellite location determining unit is configured to select at least one visible satellite candidate using the time information and the satellite disposition information, and to determine locations-in-space of the at least one visible satellite candidate with the almanac information. Also, a navigation filter is configured to calculate pseudo-ranges from the at least one visible satellite and the selected at least one visible satellite candidate using the corresponding locations-in-space, and to determine a location of the GPS receiver using the calculated pseudo-ranges.
28 Citations
10 Claims
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1. A Global Positioning System (GPS) receiver, comprising:
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a GPS receiving unit configured to receive navigation data from at least one visible satellite; a decoder configured to decode the received navigation data to extract time and almanac information from the decoded navigation data; a database configured to store satellite disposition information; a satellite location determining unit configured to select at least one visible satellite candidate using the time information and the satellite disposition information, and to determine locations-in-space of the at least one visible satellite candidate with the almanac information; and a navigation filter configured to calculate a pseudo-ranges from the at least one visible satellite and the selected at least one visible satellite candidate using the locations-in-space of the at least one visible satellite and the selected at least one visible satellite candidate, and to determine a location of the GPS receiver using the calculated pseudo-ranges. - View Dependent Claims (2, 3, 4, 5)
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6. A method of determining a location of a Global Positioning System (GPS) receiver, comprising:
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receiving navigation data from at least one visible satellite; decoding the received navigation data to extract time and almanac information from the decoded navigation data; selecting at least one visible satellite candidate using the time information and satellite disposition information stored in the GPS receiver; determining a location-in-space of the selected at least one visible satellite candidate using the almanac information; calculating pseudo-ranges from the at least one visible satellite and the selected at least one visible satellite candidate using the locations-in-space of the at least one visible satellite and the selected at least one visible satellite candidate; and determining a location of the GPS receiver using the calculated pseudo-ranges. - View Dependent Claims (7, 8, 9, 10)
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Specification