SYSTEMS AND METHODS FOR TRANSPARENCY MAPPING USING MULTIPATH SIGNALS
First Claim
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1. A method for mapping a structure, the method comprising:
- detecting, at a receiver, a first wireless signal transmitted directly from a satellite;
deriving, from the first wireless signal, a location of the satellite;
detecting, at the receiver, a second wireless signal transmitted by the satellite and reflected by a structure;
determining a time difference of arrival (TDOA) between the second wireless signal and the first wireless signal; and
mapping at least one reflection point associated with the structure, the mapping being based on the TDOA, a location of the receiver, and the location of the satellite.
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Abstract
Systems and methods for mapping a structure detect wireless signals, including at least one multipath signal that has experienced at least one reflection against a portion of the structure prior to the detection. The wireless signals are analyzed to estimate reflection points for the multipath signal(s), and a map of at least the portion of the structure is generated based on the estimated reflection points.
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Citations
12 Claims
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1. A method for mapping a structure, the method comprising:
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detecting, at a receiver, a first wireless signal transmitted directly from a satellite; deriving, from the first wireless signal, a location of the satellite; detecting, at the receiver, a second wireless signal transmitted by the satellite and reflected by a structure; determining a time difference of arrival (TDOA) between the second wireless signal and the first wireless signal; and mapping at least one reflection point associated with the structure, the mapping being based on the TDOA, a location of the receiver, and the location of the satellite. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for mapping a structure, the system comprising:
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a) a receiver at a known location; and b) one or more signal processing elements operatively coupled to the receiver, wherein the receiver and the signal processing elements are for; i) detecting a first wireless signal transmitted directly from a satellite, ii) deriving, from the first wireless signal, a location of the satellite, iii) detecting a second wireless signal transmitted by the satellite and reflected by a structure, iv) determining a time difference of arrival (TDOA) between the second wireless signal and the first wireless signal, and v) mapping at least one reflection point associated with the structure, the mapping being based on the TDOA, the location of the receiver, and the location of the satellite. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification