System, method, apparatus and means for constructing building tomography and timing information
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 31, 2005
Grant Date -
N/A
app pub date -
Oct 16, 2002
filing date -
Oct 17, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A server provides GPS aiding data to mobile GPS receivers are provided with an enclosed environment (e.g., within a large building) where the received GPS signal is likely to be weak or suffer multipath signal interference. The server receives GPS signals from one or more antennas within the enclosed environment and measures the multipath error in the vicinity of each antenna. Using the multipath error data for various satellite positions at various times, the server creates a delay model for the enclosed environment to generate GPS aiding data for the mobile GPS receivers. A generic delay model can be created that is applicable to similarly constructed buildings.
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