MVDR Beamforming for RFI Suppression in EcoSAR data
Conference: EUSAR 2018 - 12th European Conference on Synthetic Aperture Radar
06/04/2018 - 06/07/2018 at Aachen, Germany
Proceedings: EUSAR 2018
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Bollian, Tobias; Osmanoglu, Batuhan; Rincon, Rafael F.; Lee, Seung-Kuk; Fatoyinbo, Temilola (USRA, NASA/Goddard Space Flight Center, Greenbelt, MD 20771, USA)
A major challenge for Synthetic Aperture Radar (SAR) operating at low frequencies is Radio Frequency Interference (RFI). RFI leads to a degradation of image quality and derived science products. Adequate suppression tech-niques are therefore critical. New advanced techniques can be achieved with Digital Beamforming (DBF) radars such as EcoSAR. In this paper we describe the filtering of RFI from interferometric EcoSAR flight data using a Constraint Minimum Variance Distortionless Response (MVDR) Beamformer in the time domain. Results are presented and the interferometric image quality is assessed before and after RFI suppression.