Position bias amelioration method and apparatus in GNSS receiver
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United States of America Patent
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Oct 4, 2011
Grant Date -
Jul 1, 2010
app pub date -
Dec 27, 2008
filing date -
Dec 27, 2008
priority date (Note) -
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Abstract
A method of eliminating user position biases caused by satellite constellation changes or differential signal gain/loss is provided. The method comprises: (A) substantially continuously determining an unbiased user's position by using a radio receiver”; (B) detecting a “detectable event” by using the radio receiver; (C) measuring a bias caused by the detectable event; (D) performing an update process by accumulating each bias caused by at least one detectable event to generate an accumulated bias; and (E) eliminating the accumulated bias at each Epoch by using a correction process.
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