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UAVSAR: A new NASA airborne SAR system for science and technology research

Rosen, Paul A. and Hensley, Scott and Wheeler, Kevin and Sadowy, Greg and Miller, Tim and Shaffer, Scott and Muellerschoen, Ron and Jones, Cathleen and Zebker, Howard and Madsen, Søren (2006) UAVSAR: A new NASA airborne SAR system for science and technology research. In: 2006 IEEE International Radar Conference Record. Radar Conference . IEEE , New York, N.Y., pp. 22-29. ISBN 978-0-7803-9496-4.

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NASA’s Jet Propulsion Laboratory is currently building a reconfigurable, polarimetric L-band synthetic aperture radar (SAR), specifically designed to acquire airborne repeat track SAR data for differential interferometric measurements. Differential interferometry can provide key deformation measurements, important for studies of earthquakes, volcanoes and other dynamically changing phenomena. Using precision real-time GPS and a sensor controlled flight management system, the system will be able to fly predefined paths with great precision. The expected performance of the flight control system will constrain the flight path to be within a 10 m diameter tube about the desired flight track. The radar will be designed to be operable on a UAV (Unpiloted Arial Vehicle) but will initially be demonstrated on a on a NASA Gulfstream III. The radar will be fully polarimetric, with a range bandwidth of 80 MHz (2 m range resolution), and will support a 16 km range swath. The antenna will be electronically steered along track to assure that the antenna beam can be directed independently, regardless of the wind direction and speed. Other features supported by the antenna include elevation monopulse and pulse-to-pulse re-steering capabilities that will enable some novel modes of operation. The system will nominally operate at 45,000 ft (13800 m). The program began as an Instrument Incubator Project (IIP) funded by NASA Earth Science and Technology Office (ESTO).

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Additional Information:© 2006 IEEE. Issue Date: 24-27 April 2006. Date of Current Version: 30 May 2006. This paper was written at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. We would like to thank Total Aircraft Services who is modifying the GIII and supplying the pod for the pod interior figures and NASA Dryden for their expertise on aircraft systems and precision flying. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology.
Funding AgencyGrant Number
Subject Keywords:electronically scanned array; interferometry; radar; SAR; UAV
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INSPEC Accession Number8977061
Series Name:Radar Conference
Record Number:CaltechAUTHORS:20110218-130200993
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Official Citation:Rosen, P.A.; Hensley, S.; Wheeler, K.; Sadowy, G.; Miller, T.; Shaffer, S.; Muellerschoen, R.; Jones, C.; Zebker, H.; Madsen, S.; , "UAVSAR: a new NASA airborne SAR system for science and technology research," Radar, 2006 IEEE Conference on , vol., no., pp. 8 pp., 24-27 April 2006 doi: 10.1109/RADAR.2006.1631770 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22386
Deposited By: Benjamin Perez
Deposited On:18 Feb 2011 22:48
Last Modified:03 Oct 2019 02:37

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