System, method, apparatus and means for constructing building tomography and timing information
First Claim
1. A method for predicting multipath error data in a building, comprising:
- receiving GPS signal data;
determining multipath error data;
logging said multipath error data with source position information; and
predicting multipath error at said building based on source position information.
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Accused Products
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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Citations
15 Claims
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1. A method for predicting multipath error data in a building, comprising:
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receiving GPS signal data;
determining multipath error data;
logging said multipath error data with source position information; and
predicting multipath error at said building based on source position information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification