High‐precision distortion parameters estimation for polarimetric SAR calibration.

This Letter proposes a high‐precision and non‐iterative polarimetric synthetic aperture radar (SAR) (PolSAR) calibration algorithm. By solving a system of non‐linear equations, the distortion parameters can be obtained directly. The proposed algorithm is assessed by the simulated PolSAR data. The experimental results show that the algorithm can accurately solve all distortion parameters even though the crosstalk is high and has a better estimation performance compared with the widely used non‐iterative Quegan algorithm. [ABSTRACT FROM AUTHOR]