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Proceedings Paper

NASA's L-band imaging scatterometer
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Paper Abstract

The NASA RADSTAR instrument is a compact scatterometer-radiometer system designed for airborne and space remote sensing of Earth surface properties such as soil moisture and sea surface salinity. In this paper we describe the active portion of RADSTAR, the L-band Imaging Scatterometer (LIS). The system employs electronic steering and digital beamforming techniques to generate multiple, low-sidelobe beams over a scan range of +/-50 degrees below an aircraft. We discuss the design and testing of LIS, and the planned merging of the scatterometer with the radiometric components of the final instrument. In its final configuration, RadSTAR will employ a single broadband antenna to efficiently support simultaneous scatterometer (LIS) and radiometer measurements in airborne and spaceborne applications. LIS is currently being flown along with the ESTAR synthetic aperture radiometer aboard the NASA P-3 aircraft in order to prove the concept of coregistered data, setting the path for future spaceborne, single aperture, electronically scanned, radar/radiometer systems.

Paper Details

Date Published: 7 December 2006
PDF: 7 pages
Proc. SPIE 6410, Microwave Remote Sensing of the Atmosphere and Environment V, 64100E (7 December 2006); doi: 10.1117/12.693991
Show Author Affiliations
Peter Hildebrand, NASA Goddard Space Flight Ctr. (United States)
Rafael Rincon, NASA Goddard Space Flight Ctr. (United States)
Larry Hilliard, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 6410:
Microwave Remote Sensing of the Atmosphere and Environment V
Azita Valinia; Seiho Uratsuka; Tapan Misra, Editor(s)

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