Position location using broadcast analog television signals
First Claim
Patent Images
1. A method for determining the position of a user terminal, comprising:
- receiving, at the user terminal, a broadcast analog television signal having a periodic component; and
correlating the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and
wherein the location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal.
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Accused Products
Abstract
A computer program product, apparatus, and method for determining the position of a user terminal. It includes receiving, at the user terminal, a broadcast analog television signal having a periodic component; and correlating the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and wherein the location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal.
29 Citations
52 Claims
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1. A method for determining the position of a user terminal, comprising:
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receiving, at the user terminal, a broadcast analog television signal having a periodic component; and
correlating the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and
wherein the location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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14. An apparatus for determining the position of a user terminal, comprising:
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means for receiving, at the user terminal, a broadcast analog television signal having a periodic component; and
means for correlating the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and
whereinthe location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal.
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27. An apparatus for determining the position of a user terminal, comprising:
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a receiver to receive, at the user terminal, a broadcast analog television signal having a periodic component; and
a correlator to correlate the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and
whereinthe location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal.
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40. Computer-readable media embodying instructions executable by a computer to perform a method for determining the position of a user terminal, the method comprising:
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receiving, at the user terminal, a broadcast analog television signal having a periodic component; and
correlating the broadcast analog television signal with a predetermined reference signal based on the periodic component, thereby producing a pseudorange; and
whereinthe location of the user terminal is determined based on the pseudorange and a location of the transmitter of the broadcast analog television signal. - View Dependent Claims (41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification