Accuracy and performance of a hybrid positioning system
First Claim
1. A method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device comprising:
- determining an initial WPS position of the device using WPS;
calculating an error region around the initial WPS position of the device;
dividing the error region into a plurality of points;
obtaining satellite measurements from at least two satellites in view of the device;
determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites;
selecting the point with the lowest variation in the receiver clock bias; and
determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.
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Accused Products
Abstract
The present disclosure relates to a method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device. The method can include determining an initial WPS position of the device using WPS, calculating an error region around the initial WPS position of the device, dividing the error region into a plurality of points, obtaining satellite measurements from at least two satellites in view of the device, determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites, selecting the point with the lowest variation in the receiver clock bias, and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device.
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Citations
19 Claims
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1. A method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device comprising:
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determining an initial WPS position of the device using WPS; calculating an error region around the initial WPS position of the device; dividing the error region into a plurality of points; obtaining satellite measurements from at least two satellites in view of the device; determining a variation in a receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites; selecting the point with the lowest variation in the receiver clock bias; and determining whether or not to use the point with the lowest variation in receiver clock bias to refine the initial WPS position of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for determining the position of a WLAN positioning system (WPS) and satellite positioning system (SPS) enabled device comprising:
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determining an initial WPS position of the device using WPS; calculating an error region around the initial WPS position of the device; dividing the error region into a plurality of points; obtaining satellite measurements from at least two satellites in view of the device; determining a variation of a SPS receiver clock bias for each point within the error region based on the satellite measurements from at least two satellites; selecting a group of points with the lowest variation in the receiver clock bias; and determining a new refined position based on the group of points. - View Dependent Claims (18, 19)
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Specification