DETECTING METHOD OF GPS CLOCK SIGNAL JUMP USING CARRIER PHASE MEASUREMENTS IN REAL-TIME
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United States of America Patent
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Issued Date -
Dec 19, 2013
app pub date -
Apr 5, 2013
filing date -
Jun 15, 2012
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Abandoned
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Abstract
Provided is a method of detecting GPS clock signal jump, comprising a data obtaining step of obtaining GPS carrier phase measurements from a GPS receiver and satellite orbits from IGS to detect the GPS clock signal jump; a GPS clock bias calculating step of eliminating errors included in the data obtained from the data obtaining step and calculating GPS clock bias; a Teager energy calculating step of applying a Teager energy operator to the GPS clock bias calculated with respect to each satellite in the GPS clock bias calculating step and calculating Teager energy to determine whether the GPS clock jump is occurred; and a GPS clock jump detecting step of checking whether a Teager energy is larger than a threshold value. Therefore, the present invention can effectively detect the GPS clock signal jump in real-time.
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