SATELLITE-BASED POSITIONING METHOD
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United States of America Patent
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Issued Date -
Feb 21, 2013
app pub date -
Sep 25, 2011
filing date -
Aug 16, 2011
priority date (Note) -
Abandoned
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Abstract
A satellite-based positioning method is applicable in a Global Positioning System (GPS) receiver. The satellite-based positioning method includes the steps of obtaining multiple satellites in use by searching; calculating every satellite vector between each of the satellites in use and the GPS receiver; selecting three of the satellites in use in sequence as a satellite candidate set, searching for one of the satellite candidate set forming a geometric error relation according to the multiple satellite vectors, and using at least one of the satellites in use in the satellite candidate set forming the geometric error relation as a first satellite; searching for at least one second satellite in the satellites in use, wherein a signal strength varied rate of the second satellite is greater than a varied rate threshold; and using the satellites in use having the first satellite or the second satellite removed to perform positioning.
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