Synthetic aperture radar radio frequency interference suppression technology

Abstract

Radio frequency interference (RFI) can easily hinder the data collection, imaging and interpretation of the initial echo of synthetic aperture radar, which has always been a difficult problem affecting the accuracy of synthetic aperture radar. In this paper, the radio frequency interference suppression technology of synthetic aperture radar is analyzed and studied. It can be concluded that in todays complex and changeable electromagnetic environment, although many literature have proposed and established different objective functions and constraints for more specific application environments, there is still room for further improvement. Therefore, the future SAR system needs to select the most appropriate interference suppression method according to the dynamic changes of RFI environment. The development trend of interference suppression technology in the future is obtained from the comprehensive analysis of the RFI interference sources, RFI models and existing SAR interference suppression technologies, which provides a certain reference for future research.