GNSS Positioning Using Pressure Sensors
First Claim
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1. 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.
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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.
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Citations
25 Claims
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1. A navigation receiver, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method in a navigation receiver, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A navigation receiver, comprising:
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means for obtaining a pressure sensor signal; means for obtaining pseudoranges associated with one or more satellites; and means for 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. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A processor-readable non-transitory medium having instructions stored thereon, which instructions when executed by at least one processor causes a navigation receiver to:
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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.
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Specification