Multipath mitigation using sensors
First Claim
Patent Images
1. An navigation receiver, comprising:
- a physical sensor input; and
circuitry coupled to the physical sensor input;
wherein the circuitry is configured to use information from the physical sensor input for multipath mitigation in a GNSS position.
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Abstract
Systems, methods and devices for multipath mitigation are presented. Specifically, embodiments of the invention can advantageously use sensor inputs to mitigate the effect of multipath signals received at a receiver. The use of physical sensors in navigation systems is deemed particularly advantageous.
35 Citations
18 Claims
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1. An navigation receiver, comprising:
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a physical sensor input; and circuitry coupled to the physical sensor input; wherein the circuitry is configured to use information from the physical sensor input for multipath mitigation in a GNSS position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for multipath mitigation, comprising:
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receiving a GNSS measurement from a primary GNSS system; calculating a position based on the GNSS measurement; receiving a first position-related datum derived from a sensor input, not derived from the primary GNSS system and corresponding approximately in time to the GNSS measurement; and determining whether the position based on the GNSS measurement was significantly affected by multipath by using the first position-related datum; wherein the first position related-datum is an acceleration. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A portable navigation system, comprising:
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a primary GNSS sensor; a sensor not based on the primary GNSS; and a microprocessor configured to use input derived from the GNSS sensor and the sensor not based on the primary GNSS to perform multipath mitigation in a GNSS position. - View Dependent Claims (14, 15, 16, 17)
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18. An apparatus for multipath mitigation, comprising:
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means for receiving a GNSS measurement from a primary GNSS system; means for calculating a position based on the GNSS measurement; means for receiving a first position-related datum derived from a sensor input, not derived from the primary GNSS system and corresponding approximately in time to the GNSS measurement; and means for determining whether the position based on the GNSS measurement was significantly affected by multipath by using the first position-related datum; wherein the first position related-datum is an acceleration.
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Specification