Locating an object using GPS with additional data
First Claim
1. A method of tracking a moving object using GPS, comprising the steps of:
- receiving GPS data;
accessing a representation of a surface, said object traveling on said surface; and
using said representation of said surface with GPS data from no more than three useful satellites to determine a location of said object.
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0 Petitions
Accused Products
Abstract
A system is disclosed that uses GPS and additional data to determine the location of an object. Typically, GPS receivers need valid data from four satellites to accurately determine a three dimensional location. If a GPS receiver is receiving valid data from fewer than four satellites, then additional data is used to compensate for the shortage of satellites in view of the GPS receiver. Examples of additional data includes a representation of the surface that the object is traveling on, an accurate clock, an odometer, dead reckoning information, pseudolite information, and error correction information from a differential reference receiver. An exemplar use of the disclosed system is to concurrently track a set of one or more automobiles during a race. The determined locations of the automobile can be used to provide route information, to generate statistics and/or to edit video of one or more of the automobiles.
40 Citations
32 Claims
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1. A method of tracking a moving object using GPS, comprising the steps of:
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receiving GPS data;
accessing a representation of a surface, said object traveling on said surface; and
using said representation of said surface with GPS data from no more than three useful satellites to determine a location of said object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 31, 32)
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18. A method of tracking a moving object using GPS, comprising the steps of:
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receiving GPS data; and
determining a location of said object based on said GPS data, first additional data if said GPS data only includes valid data no more than three GPS sources and second additional data if said GPS data only includes valid data no more than two useful GPS sources.
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23. A method of tracking a moving object using GPS, comprising the steps of:
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receiving GPS data from a GPS receiver;
receiving error correction data from a non-GPS source;
determining a location of said object based on said GPS data and said error correction data; and
communicating said location to said GPS receiver.
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29. An apparatus for tracking a moving object:
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a GPS receiver located with said object;
a processor in communication with said GPS receiver and located with said object;
a storage device in communication with said processor and located with said object; and
a transmitter in communication with said processor and located with said object.
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Specification