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Status of a UAV SAR designed for repeat pass interferometry for deformation measurements

Show simple item record Hensley, Scott Wheeler, Kevin Hoffman, Jim Miller, Tim Lou, Yunling Muellerschoen, Ron Zebker, Howard Madsen, Soren Rosen, Paul 2008-04-18T20:48:04Z 2008-04-18T20:48:04Z 2004-06-22
dc.identifier.citation Earth Science Technology Conference, Palo Alto, California, June 22, 2004. en_US
dc.identifier.clearanceno 04-1727
dc.description.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 en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004. en_US
dc.subject interferometry SAR en_US
dc.subject satellites en_US
dc.subject radar en_US
dc.title Status of a UAV SAR designed for repeat pass interferometry for deformation measurements en_US
dc.type Preprint en_US

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