Instantaneous Time Smoothing in GPS Receivers Using Kalman Filter
Positioning precision aids in calibration of baseline estimation using Global Positioning Systems (GPS) receiver. Analysis of instantaneous epoch measurements improves coordinate positioning than estimation of position using 24-h batch processing of GPS data. In the present work, smoothing of the epoch measurements is done by using Kalman filter to achieve accurate positioning of GPS receivers. Using the above algorithm, the variations in the epoch time are minimized. These variations are caused by receiver loss of lock and cycle slips. These studies will lead to applications in other research areas such as earthquake geodesy and GPS seismology.
KeywordsPrecise positioning Epoch measurements Kalman filter
This present research is supported by the Department of Science and Technology (DST), Government of India via sponsored research projects SR/AS-04/WOS-A/2011 and SR/S4/AS-9/2012. The authors would like to thank the Atmospheric Sciences panel of DST and President, Koneru Lakshmaih University for their continuous support and assistance.
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