GNSS positioning using pressure sensors
AssigneeQUALCOMM Incorporated
InventorLionel Jacques Garin
Life of this patent
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Abstract
Systems, methods and devices for improving the accuracy of GNSS data are provided. Specifically, embodiments of the invention can advantageously use sensor input to improve the accuracy of position fixes. The use of physical 5 sensors in navigation systems is deemed particularly advantageous, especially where altitude data derived from the pressure sensor is calibrated with and/or blended with GNSS altitude data.
Claims17
A navigation receiver, comprising:
- a pressure sensor configured to provide a pressure sensor signal;
- a satellite receiver configured to provide pseudoranges associated with one or more satellites;
- and
- one or more position filters configured to:
- generate a position based, at least, on a pseudorange offset for a particular satellite of the one or more satellites, wherein the pseudorange offset, indicative of a multipath error of the particular satellite, is estimated from the pressure sensor signal and the pseudoranges associated with the one or more satellites.
A method in a navigation receiver, comprising:
- obtaining a pressure sensor signal;
- obtaining pseudoranges associated with one or more satellites;
- and
- generating a position based, at least, on a pseudorange offset for a particular satellite of the one or more satellites, wherein the pseudorange offset, indicative of a multipath error of the particular satellite, is estimated from the pressure sensor signal and the pseudoranges associated with the one or more satellites.
A processor-readable non-transitory medium having instructions stored thereon, which instructions when executed by at least one processor causes a navigation receiver to:
- obtain a pressure sensor signal;
- obtain pseudoranges associated with one or more satellites;
- and
- generate a position based, at least, on a pseudorange offset for a particular satellite of the one or more satellites, wherein the pseudorange offset, indicative of a multipath error of the particular satellite, is estimated from the pressure sensor signal and the pseudoranges associated with the one or more satellites.
Dependencies are inferred from the claim text.