RADIO FREQUENCY INTERFERENCE SUPPRESSION APPLIED TO SYNTHETIC APERTURE RADAR DATA

This paper addresses techniques of Radio Frequency Interference (RFI) suppression applied to Synthetic Aperture Radar (SAR) data. These techniques could also be used to protect radio-astronomical observations from harmful interference. Of the RFI suppression techniques investigated, the notch filter and the Least Mean Squares (LMS) adaptive filter have been implemented and applied to real P-band data obtained from the E-SAR system of the German Aerospace Center (DLR), Oberpfaffenhofen, and to real VHF-band data obtained from the South African SAR (SASAR) system. Both methods significantly suppressed the RFI in the real images investigated