RFI Detection Using Degree of Polarization for Polarimetric Synthetic Aperture Radar

In microwave remote sensing, radio frequency interference (RFI), which is caused by other systems such as radars, telecommunications, and navigation systems, has been a serious problem. RFI generates haze-like or linear-pattern artifacts in synthetic aperture radar (SAR) images and degrades their quality. Therefore, it is mandatory to detect and mitigate RFI properly. In this paper, we propose an RFI-detection method using degree of polarization (DoP) which focuses on the difference of polarization states between RFI and useful signals.