LAUSR

Finding out and turning off the Radio Frequency Interference (RFI) sources as many as possible is an important work for Synthetic Aperture Interferometric Radiometer (SAIR). While the impact of strong RFIs on reconstructed brightness temperature image is clearly observable, the presence of low or moderate level RFIs is often hard to be aware of, leaving the RFI detection and localization a difficult problem. In this paper, an improved RFI detection method is proposed by making use of the point-source ripple to give prominence to the RFIs presented in the SAIR imagery. The method tests based on SMOS visibility samples and the performance evaluations by numerical simulations validate the correctness and effectiveness of the developed method.