Fast-time filtering with multichannel SAR
Date
2005
Authors
Rosenberg, L.
Gray, D.
Editors
Daneu, J.
Musto, H.
Musto, H.
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings of the Thirteenth Annual Adaptive Sensor Array Processing (ASAP) Workshop, held at MIT Lincoln Laboratory, 7-8 June 2005 / J. Daneu, H. Musto (eds.): pp. 1-6
Statement of Responsibility
Luke Rosenberg and Doug Gray
Conference Name
Adaptive Sensor Array Processing Workshop (13th : 2005 : Lexington, Massachusetts)
Abstract
Large regions of a Synthetic Aperture Radar (SAR) image can potentially be destroyed by an airborne broadband jammer. Jammer components include both the direct-path and multipath reflections from the ground, known as hotclutter or terrain scattered interference. Using multiple antennas on a SAR provides spatial degrees of freedomand allows for beamforming to reject the direct-path signal. However, to effectively suppress non-stationary hot-clutter components, fast-time taps fromwithin a pulse have shown to be effective for airborne radar, [1]-[2]. The goal of interference suppression for SAR is to successfully suppress these interferences while not significantly effecting the image quality by blurring, reducing the resolution or raising the side-lobe level. This paper looks at two fast-time STAP algorithms, the Minimum Variance Distortionless Response (MVDR) and the Generalised Sidelobe Canceller (GSC) to study the effect of non-stationary interference suppression for SAR images.