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《Science of Surveying and Mapping》 2010-01
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Two-step method for estimating the RTK system delay using known reference point

LI Yang-huan,WANG Jian,JIN Tian,ZHOU Zhi-min(The College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China)  
The position sampling and echo sampling system are not synchronized,when the RTK is used in the Synthetic Aperture Radar imaging process.The delay error of RTK system is also analyzed,which is divided into a fixed delay and a random delay.In this paper a practical method used for estimating this delay is presented.It makes use of the position information of the known reference point to accumulate the echoes and get the fixed delay quickly.Within the result,further random delay is estimated by comparing the image's ISLR.Finally the validity of this method is proved by simulation and real data.
【CateGory Index】: P228.4
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