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Please use this identifier to cite or link to this item: http://hdl.handle.net/2014/40738

Title: Status of a UAV SAR designed for repeat pass interferometry for deformation measurements
Authors: Hensley, Scott
Wheeler, Kevin
Hoffman, Jim
Miller, Tim
Lou, Yunling
Muellerschoen, Ron
Zebker, Howard
Madsen, Soren
Rosen, Paul
Keywords: interferometry SAR
satellites
radar
Issue Date: 22-Jun-2004
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004.
Citation: Earth Science Technology Conference, Palo Alto, California, June 22, 2004.
Abstract: Under the NASA EST0 sponsored Instrument Incubator Program we have designed a lightweight, reconfigurable polarimetric L-band SAR designed for repeat pass deformation measurements of rapidly deforming surfaces of geophysical interest such as volcanoes or earthquakes. This radar will be installed on an unmanned airborne vehicle (UAV) or a lightweight, high-altitude, and long endurance platform such as the Proteus. After a study of suitable available platforms we selected the Proteus for initial development and testing of the system. We want to control the repeat track capability of the aircraft to be within a 10 m tube to support the repeat deformation capability. We conducted tests with the Proteus using real-time GPS with sub-meter accuracy to see if pilots could fly the aircraft within the desired tube. Our results show that pilots are unable to fly the aircraft with the desired accuracy and therefore an augmented autopilot will be required to meet these objectives. Based on the Proteus flying altitude of 13.7 km (45,000 ft), we are designing a fully polarimetric L-band radar with 80 MHz bandwidth and 16 km range swath. This radar will have an active electronic beam steering antenna to achieve Doppler centroid stability that is necessary for repeat-pass interferometry (RPI). This paper will present are design criteria, current design and expected science applications
URI: http://hdl.handle.net/2014/40738
Appears in Collections:JPL TRS 1992+

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