VEHICLE LOCATION ACCURACY
First Claim
Patent Images
1. A system comprising:
- a satellite-based positioning-system module configured to provide satellite-positioning data;
a compass configured to provide compass data;
a stability control system configured to provide stability control data; and
a controller configured to maintain a last-known vehicle location, and, when the satellite-positioning data is unavailable from the satellite-based positioning-system module, utilize the compass data and the stability control data to estimate a current vehicle location from the last-known vehicle location.
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Abstract
A controller may maintain a last-known vehicle location, and, when satellite-positioning data is unavailable from a satellite-based positioning-system module, utilize compass data and stability control data to estimate a current vehicle location from the last-known vehicle location. The controller may avoid use of the compass data to estimate the current vehicle location when the vehicle is accelerating or decelerating in East or West headings.
37 Citations
19 Claims
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1. A system comprising:
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a satellite-based positioning-system module configured to provide satellite-positioning data; a compass configured to provide compass data; a stability control system configured to provide stability control data; and a controller configured to maintain a last-known vehicle location, and, when the satellite-positioning data is unavailable from the satellite-based positioning-system module, utilize the compass data and the stability control data to estimate a current vehicle location from the last-known vehicle location. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer-implemented method comprising:
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when satellite-based positioning-system data is available from a satellite-positioning module, identifying a current vehicle location via the satellite-positioning module; and otherwise, determining the current vehicle location based on a last-known vehicle location, compass heading from a compass, and stability control data from a stability control system, such that the compass heading is corrected according to forward acceleration and grade identified from the stability control data. - View Dependent Claims (8, 9, 10, 11)
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12. A vehicle comprising:
a controller configured to compute a plurality of estimates of a current location of the vehicle, each estimate being performed using a different non-satellite-based-positioning-system approach; identify a subset of the plurality of estimates of the current locations based on consistency relative to one another; and average the subset of the plurality of estimates to compute an overall current location of the vehicle. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
Specification