Method for calculating current position coordinate
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United States of America Patent
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Mar 29, 2011
Issued Date -
N/A
app pub date -
Apr 6, 2009
filing date -
Dec 19, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A method for calculating current position coordinate is applied to a global positioning system (GPS) receiver. When positioning at a current time point, the GPS receiver directly calculates a code delay and a carrier frequency of each satellite and position coordinate of the GPS receiver at a current positioning time point by utilizing an ephemeris data of each satellite and position coordinate of the GPS receiver at a last positioning time point, thereby greatly lowering an operation amount, so as to reduce the power consumption.
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