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Proceedings Paper

Real-time beamforming synthetic aperture radar
Author(s): Rafael Rincon; Peter Hildebrand; Lawrence Hilliard; Damon Bradley; Luko Krnan; Salman Sheikh; Jared Lucey
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Paper Abstract

This paper discusses the concept and design of a real-time Digital Beamforming Synthetic Aperture Radar (DBSAR) for airborne applications which can achieve fine spatial resolutions and wide swaths. The development of the DBSAR enhances important scientific measurements in Earth science, and serves as a prove-of-concept for planetary exploration missions. A unique aspect of DBSAR is that it achieves fine resolutions over large swaths by synthesizing multiple cross-track beams simultaneously using digital beamforming techniques. Each beam is processed using SAR algorithms to obtain the fine ground resolution without compromising fine range and azimuth resolutions. The processor uses an FPGA-based architecture to implement digital in-phase and quadrature (I/Q) demodulation, beamforming, and range and azimuth compression. The DBSAR concept will be implemented using the airborne L-Band Imaging Scatterometer (LIS) on board the NASA P3 aircraft. The system will achieve ground resolutions of less than 30 m and swaths of 10 km from an altitude of 8 km.

Paper Details

Date Published: 3 October 2006
PDF: 7 pages
Proc. SPIE 6361, Sensors, Systems, and Next-Generation Satellites X, 63611K (3 October 2006); doi: 10.1117/12.690274
Show Author Affiliations
Rafael Rincon, NASA Goddard Space Flight Ctr. (United States)
Peter Hildebrand, NASA Goddard Space Flight Ctr. (United States)
Lawrence Hilliard, NASA Goddard Space Flight Ctr. (United States)
Damon Bradley, NASA Goddard Space Flight Ctr. (United States)
Luko Krnan, Dynamic Sensing Technologies (United States)
Salman Sheikh, NASA Goddard Space Flight Ctr. (United States)
Jared Lucey, Univ. of Massachusetts, Amherst (United States)


Published in SPIE Proceedings Vol. 6361:
Sensors, Systems, and Next-Generation Satellites X
Roland Meynart; Steven P. Neeck; Haruhisa Shimoda, Editor(s)

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