Method and apparatus for operating a satellite positioning system receiver
First Claim
1. A method for operating a mobile satellite positioning system (SPS) receiver, said method comprising:
- determining a first plurality of pseudoranges at a first time;
determining a second plurality of pseudoranges at a second time which is after said first time;
storing said first plurality of pseudoranges and storing said second plurality of pseudoranges;
transmitting after said second time said first plurality of pseudoranges and said second plurality of pseudoranges.
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Abstract
A method and an apparatus for operating a satellite positioning system (SPS) receiver in a client/server architecture. In one example of a method, a first plurality of pseudoranges is determined at a first time and a second plurality of pseudoranges is determined at a second time which is after the first time. The first and the second pluralities of pseudoranges are stored. After the second time, the first and the second pluralities of pseudoranges are transmitted to a location server, normally in one transmission. The location server then determines a first position from the first plurality of pseudoranges and a second position from the second plurality of pseudoranges. In one particular example, the first and second pseudoranges are transmitted in response to a predetermined type of event, and the location server stores a collection of differential GPS data which has been collected over time.
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Citations
17 Claims
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1. A method for operating a mobile satellite positioning system (SPS) receiver, said method comprising:
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determining a first plurality of pseudoranges at a first time; determining a second plurality of pseudoranges at a second time which is after said first time; storing said first plurality of pseudoranges and storing said second plurality of pseudoranges; transmitting after said second time said first plurality of pseudoranges and said second plurality of pseudoranges. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile Satellite Positioning System (SPS) receiver comprising:
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a SPS RF (radio frequency) receiver which receives SPS signals; a processor coupled to said SPS RF receiver, said processor determining a plurality of pseudoranges from said SPS signals, wherein said processor determines a first plurality of pseudoranges from SPS signals received at a first time and determines a second plurality of pseudoranges from SPS signals received at a second time which is after said first time; a memory coupled to said processor, said memory storing said first plurality of pseudoranges and said second plurality of pseudoranges; a transmitter coupled to said memory, said transmitter transmitting said first plurality of pseudoranges and said second plurality of pseudoranges after said second time. - View Dependent Claims (11, 12, 13, 14)
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15. A method of determining position from satellite positioning system (SPS) information, said method comprising:
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receiving a first plurality of pseudoranges which were determined from first SPS signals received at a first time; receiving a second plurality of pseudoranges which were determined from second SPS signals received at a second time which is after said first time; determining a first position from said first plurality of pseudoranges and determining a second position from said second plurality of pseudoranges, wherein said first plurality of pseudoranges and said second plurality of pseudoranges were received in one transmission after said second time. - View Dependent Claims (16, 17)
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Specification