Method to modify calibration data used to locate a mobile unit
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United States of America Patent
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Mar 19, 2013
Grant Date -
Aug 13, 2009
app pub date -
Apr 15, 2009
filing date -
Feb 5, 2007
priority date (Note) -
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Abstract
A method of modifying calibration data used to geo-locate a mobile station located in an indoor environment is disclosed. When a mobile station is located indoors, the signal strength of signals received and/or transmitted by the mobile station have the tendency to be lower than the strength of the signals received by a mobile station located outdoors. As a result of these lower signal strengths, geo-location efforts which rely on signal strengths may result in unsatisfactory location accuracy. Modifying pre-existing calibration data obtained outdoors may provide a way to simulate indoor calibration data characteristics.
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