Comparison of polarimetric calibration techniques and their applications

Crosstalk calibration is an important part of polarimetric calibration, and the Quegan algorithm and Ainsworth algorithm are classic algorithms to reduce crosstalk. This paper gives analysis and comparison of these algorithms for quad polarized data with low crosstalk and high crosstalk, respectively. The PolSAR data used in experiments are acquired by East China Research Institute of Electronic Engineering over the test site near Sanya City, Hainan Province of China. The results show that Ainsworth algorithm performs well for quad polarized data with low crosstalk, while the Quegan algorithm is applicable for quad polarized data with high crosstalk.