Position location using global positioning signals augmented by broadcast television signals
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United States of America Patent
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-
Dec 9, 2008
Grant Date -
Dec 26, 2002
app pub date -
May 31, 2002
filing date -
Jun 21, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method, apparatus, and computer-readable media for determining the position of a user terminal comprises receiving at the user terminal a broadcast television signal from a television signal transmitter; determining a first pseudo-range between the user terminal and the television signal transmitter based on a known component of the broadcast television signal; receiving at the user terminal a global positioning signal from a global positioning satellite; determining a second pseudo-range between the user terminal and the global positioning satellite based on the global positioning signal; and determining a position of the user terminal based on the first and second pseudo-ranges, a location of the television signal transmitter, and a location of the global positioning satellite.
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