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A Novel Trajectory Restoration Algorithm for High-Resolution SAR Imaging
Proceedings of the 15th International Radar Symposium (IRS 2014) (June 16-18, Gdansk, Poland), pp.170-173 (2014)
I.M. Gorovyi, O.O. Bezvesilniy and D.M. Vavriv
The quality of high-resolution SAR imaging is strictly related with the precision of the platform trajectory measurements. This is one of the crucial points in the case of image formation from light-weight aircrafts and UAV platforms, which undergone significant trajectory instabilities in real flight conditions. In the paper, a new approach for the residual range-dependent phase error restoration is proposed. According to the method, the cross-track aircraft accelerations are evaluated via a specifically developed weighted estimation procedure. The reconstructed residual trajectory deviations are used for the range-dependent motion errors compensation. The corresponding experimental results are also demonstrated.
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