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Abstract
The present invention relates to a method of determining the location of a target. The method includes initializing a set of base stations to determine their location relative to each other. At the target, the time of arrival of at least one signal from each of the plurality of base stations Is measured. From this, the location of the target relative to the plurality of base stations may be directly calculated using a closed solution. In one embodiment, a time of arrival technique is used and in another embodiment a time difference of arrival technique is used. Preferably an ultra-wide band frequency is utilized.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. :
- An ad-hoc system for determining the location of a target, the system comprising;
a plurality of base stations in signaling communication with each other wherein the base stations of the plurality of base stations send signals to and receive signals from each other to determine distances between the base stations of the plurality of base stations and to set up an local coordinate system in an ad-hoc manner;
a target in signaling communication with each base station of the plurality of base stations wherein signals are sent between the plurality of base stations and the target for determining a location of the target relative to the base stations based upon the local coordinate system. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28)
- An ad-hoc system for determining the location of a target, the system comprising;
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29. :
- An ad-hoc system for determining the location of a target, the system comprising;
a plurality of base stations in signaling communication with each other wherein the based stations of the plurality of base stations send signals to and receive signals from each other to determine distances between the base stations of the plurality of base stations and to set up an local coordinate system in an ad-hoc manner and wherein at least one base station of the plurality of base stations is mobile;
a target in signaling communication with each base station of the plurality of base stations wherein signals are sent between the plurality of base stations and the target for determining a location of the target relative to the base stations based upon the local coordinate system. - View Dependent Claims (30, 31, 33, 34, 35, 36, 37)
- An ad-hoc system for determining the location of a target, the system comprising;
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38. :
- An ad-hoc system for determining the location of a target, the system comprising;
a plurality of base stations in signaling communication with each other wherein the base stations of the plurality of base stations send signals to and receive signals from each other to determine distances between the base stations of the plurality of base stations and to set up an local coordinate system in an ad-hoc manner and wherein at least one base station of the plurality of base stations is mobile;
a target in signaling communication with each base station of the plurality of base stations wherein signals are sent between the plurality of base stations and the target for directly determining a location of the target relative to the base stations based upon the local coordinate system;
wherein the signals sent between the base stations, the signals sent between the target and the based stations or both are UWB signal. - View Dependent Claims (39, 40)
- An ad-hoc system for determining the location of a target, the system comprising;
Specification