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A Velocity Estimation Algorithm of Moving Targets using Single Antenna SAR

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4 Author(s)
Gang Li ; Dept. of Electron. Eng., Tsinghua Univ., Beijing, China ; Xiang-Gen Xia ; Jia Xu ; Ying-Ning Peng

A new algorithm is proposed for velocity estimation of moving targets in single antenna synthetic aperture radar (SAR). Based on the fact that different velocity vectors cause different geometrical figures of the two-dimensional (2-D) signature in the range-Doppler (RD) domain, this algorithm estimates the azimuth and range velocities by a 2-D search such that the range cell migration correction (RCMC) and the second range compression (SRC) are correctly performed. It is shown that, using the proposed algorithm, the Doppler ambiguity problem can be avoided and satisfactory accurate velocity estimation can be obtained in high signal-to-clutter ratio (SCR) scenarios.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:45 ,  Issue: 3 )

Date of Publication:

July 2009

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