Locally measured movement smoothing of position fixes based on extracted pseudoranges
First Claim
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1. A method of improving position determination of a cellular device using locally measured movement, the method comprising:
- accessing a Global Navigation Satellite System (GNSS) chipset embedded within the cellular device by one or more hardware processors located in the cellular device and outside of the GNSS chipset, wherein the GNSS chipset calculates raw pseudoranges;
extracting the raw pseudoranges from the GNSS chipset for processing by the one or more hardware processors located in the cellular device and outside of the GNSS chipset;
determining a position fix based on the raw pseudoranges using the one or more hardware processors located in the cellular device and outside of the GNSS chipset;
obtaining locally measured movement information of the cellular device using at least one sensor that is in a known physical relationship with the cellular device; and
applying the locally measured movement information of the cellular device to the position fix, using the one or more hardware processors located in the cellular device and outside of the GNSS chipset.
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Abstract
A Global Navigation Satellite System (GNSS) chipset embedded within the cellular device is accessed. The GNSS chipset calculates raw pseudoranges. The raw pseudoranges are extracted from the GNSS chipset for processing elsewhere in the cellular device outside of the GNSS chipset. A position fix is determined based on the raw pseudoranges. Locally measured cellular device movement information is obtained from at least one sensor that is in a known physical relationship with the cellular device. The locally measured cellular device movement information is applied to the position fix.
149 Citations
17 Claims
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1. A method of improving position determination of a cellular device using locally measured movement, the method comprising:
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accessing a Global Navigation Satellite System (GNSS) chipset embedded within the cellular device by one or more hardware processors located in the cellular device and outside of the GNSS chipset, wherein the GNSS chipset calculates raw pseudoranges; extracting the raw pseudoranges from the GNSS chipset for processing by the one or more hardware processors located in the cellular device and outside of the GNSS chipset; determining a position fix based on the raw pseudoranges using the one or more hardware processors located in the cellular device and outside of the GNSS chipset; obtaining locally measured movement information of the cellular device using at least one sensor that is in a known physical relationship with the cellular device; and applying the locally measured movement information of the cellular device to the position fix, using the one or more hardware processors located in the cellular device and outside of the GNSS chipset. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for improving position determination of a cellular device using locally measured movement, the system comprising:
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one or more hardware processors located in the cellular device and outside of a Global Navigation Satellite System (GNSS) chipset embedded within the cellular device; accessing logic that accesses the Global Navigation Satellite System (GNSS) chipset embedded within the cellular device by the one or more hardware processors located in the cellular device and outside of the GNSS chipset, wherein the GNSS chipset calculates raw pseudoranges; extracting logic that extracts the raw pseudoranges from the GNSS chipset for processing by the one or more hardware processors located in the cellular device and outside of the GNSS chipset; position fix determining logic that determines a position fix based on the raw pseudoranges by the one or more hardware processors located in the cellular device and outside of the GNSS chipset; locally measured movement information accessing logic that obtains locally measured movement information of the cellular device from at least one sensor that is in a known physical relationship with the cellular device; and processing logic that applies the locally measured movement information of the cellular device to the position fix, using the one or more hardware processors located in the cellular device and outside of the GNSS chipset. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification