Estimate of geographical position of a vehicle using wireless vehicle data
First Claim
1. A method for providing a more accurate estimate of a geographical position of an ego vehicle, the method comprising:
- receiving a wireless message from a network, wherein the wireless message includes remote Global Positioning System (“
GPS”
) data and relative position data associated with a remote vehicle, wherein the relative position data includes range data and angle data which are measured by one or more onboard sensors of the remote vehicle;
determining ego position estimate data based on the remote GPS data and the relative position data by calculating a point in space that is (1) located a first distance from a remote geographic location of the remote vehicle that is at least substantially equal to a second distance described by the range data and (2) at a first angle relative to a heading of the remote vehicle that is at least substantially equal to a second angle described by the angle data, wherein the ego position estimate data describes a first geographical location of the ego vehicle from a first perspective of the remote vehicle; and
fusing the ego position estimate data and ego GPS data to form fused data, wherein the ego GPS data is retrieved by a GPS unit of the ego vehicle and describes a second geographical location of the ego vehicle from a second perspective of the ego vehicle and the fused data describes a third geographical location of the ego vehicle with an accuracy substantially equal to half a width of a roadway.
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Accused Products
Abstract
The disclosure includes embodiments for improving an estimate of a geographical position of an ego vehicle using wireless vehicle data of a remote vehicle. A method according to some embodiments includes determining ego estimate data based on remote GPS data and relative position data. The remote GPS data describes a geographical location of the remote vehicle. The relative position data describes a location of the ego vehicle relative to the remote vehicle as measured by onboard sensors of the remote vehicle. The ego estimate data describes the geographical location of the ego vehicle from the perspective of the remote vehicle. The method includes fusing the ego estimate data and ego GPS data to form fused data. The ego GPS data describes the geographical location of the ego vehicle from the perspective of the ego vehicle. The fused data describes the geographical location of the ego vehicle with lane-level accuracy.
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Citations
20 Claims
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1. A method for providing a more accurate estimate of a geographical position of an ego vehicle, the method comprising:
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receiving a wireless message from a network, wherein the wireless message includes remote Global Positioning System (“
GPS”
) data and relative position data associated with a remote vehicle, wherein the relative position data includes range data and angle data which are measured by one or more onboard sensors of the remote vehicle;determining ego position estimate data based on the remote GPS data and the relative position data by calculating a point in space that is (1) located a first distance from a remote geographic location of the remote vehicle that is at least substantially equal to a second distance described by the range data and (2) at a first angle relative to a heading of the remote vehicle that is at least substantially equal to a second angle described by the angle data, wherein the ego position estimate data describes a first geographical location of the ego vehicle from a first perspective of the remote vehicle; and fusing the ego position estimate data and ego GPS data to form fused data, wherein the ego GPS data is retrieved by a GPS unit of the ego vehicle and describes a second geographical location of the ego vehicle from a second perspective of the ego vehicle and the fused data describes a third geographical location of the ego vehicle with an accuracy substantially equal to half a width of a roadway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system including an ego vehicle, the ego vehicle comprising:
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a Global Positioning System (“
GPS”
) unit; andan onboard vehicle computer system that is communicatively coupled to the GPS unit, the onboard vehicle computer system including a non-transitory memory storing computer code which, when executed by the onboard vehicle computer system causes the onboard vehicle computer system to; determine ego position estimate data based on remote GPS data and relative position data by calculating a point in space that is (1) located a first distance from a remote geographic location of a remote vehicle that is at least substantially equal to a second distance described by range data and (2) at a first angle relative to a heading of the remote vehicle that is at least substantially equal to a second angle described by angle data, wherein the range data and the angle data are measured by one or more onboard sensors of the remote vehicle; and fuse the ego position estimate data and ego GPS data to form fused data, wherein the ego position estimate data describes a first geographical location of the ego vehicle from a first perspective of the remote vehicle, the ego GPS data is retrieved by the GPS unit of the ego vehicle and describes a second geographical location of the ego vehicle from a second perspective of the ego vehicle, and the fused data describes a third geographical location of the ego vehicle with an accuracy of substantially equal to half a width of a roadway. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A computer program product comprising a non-transitory memory of an onboard vehicle computer system of an ego vehicle storing computer-executable code that, when executed by a processor, causes the processor to:
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determine ego position estimate data based on remote GPS data and relative position data by calculating a point in space that is (1) located a first distance from a remote geographic location of a remote vehicle that is at least substantially equal to a second distance described by range data and (2) at a first angle relative to a heading of the remote vehicle that is at least substantially equal to a second angle described by angle data, wherein the range data and the angle data are measured by one or more onboard sensors of the remote vehicle; and fuse the ego position estimate data and ego GPS data to form fused data, wherein the ego position estimate data describes a first geographical location of the ego vehicle from a first perspective of the one or more sensors of the remote vehicle, the ego GPS data is retrieved by a GPS unit of the ego vehicle and describes a second geographical location of the ego vehicle from a second perspective of the ego vehicle, and the fused data describes a third geographical location of the ego vehicle with an accuracy of substantially equal to half a width of a roadway. - View Dependent Claims (18, 19, 20)
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Specification