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Digital Beamforming Based RFI Mitigation for Synthetic Aperture RadarAn increasing challenge for P-band Synthetic Aperture Radar (SAR) is Radio Frequency Interference (RFI). RFI results in image distortions and degrades the derived science products. This makes it critical to apply RFI removal techniques to restore the image quality. New advanced techniques can be achieved with Digital Beamforming (DBF) radars such as EcoSAR. In this paper, we present a Range-Dependent Time Minimum Variance Distortionless Response (RDTMVDR) Beamformer and apply it to EcoSAR flight data during post-processing. The antenna pattern (AP) is adaptively changed for each range line which increases the RFI suppression compared to a fixed AP for each pulse. The interferometric image quality is assessed before and after RFI suppression.
Document ID
20180004924
Document Type
Presentation
Authors
Bollian, Tobias
(Universities Space Research Association (USRA) Greenbelt, MD, United States)
Osmanoglu, Batuhan
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Rincon, Rafael F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Lee, SeungKuk
(Maryland Univ. Greenbelt, MD, United States)
Fatoyinbo, Temilola
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 5, 2018
Publication Date
July 22, 2018
Subject Category
Communications And Radar
Report/Patent Number
GSFC-E-DAA-TN58671-2
Meeting Information
International Geoscience and Remote Sensing Symposium (IGARSS 2018)(Valencia)
Funding Number(s)
CONTRACT_GRANT: NNG11HP16A
CONTRACT_GRANT: NNX16AT02A
Distribution Limits
Public
Copyright
Use by or on behalf of the US Gov. Permitted.

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