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NASA L-SAR instrument for the NISAR (NASA-ISRO) Synthetic Aperture Radar mission

Show simple item record Hoffman, James P. Shaffer, Scott Perkovic-Martin, Dragana 2019-05-14T19:52:40Z 2019-05-14T19:52:40Z 2016-04-04
dc.identifier.citation SPIE Asia-Pacific Remote Sensing, Delhi, India, April 4-7, 2016 en_US
dc.identifier.clearanceno 16-1285
dc.description.abstract The National Aeronautics and Space Administration (NASA) in the United States and the Indian Space Research Organization (ISRO) have partnered to develop an Earth-orbiting science and applications mission that exploits synthetic aperture radar to map Earth’s surface every 12 days or less. To meet demanding coverage, sampling, and accuracy requirements, the system was designed to achieve over 240 km swath at fine resolution, and using full polarimetry where needed. To address the broad range of disciplines and scientific study areas of the mission, a dual-frequency system was conceived, at L-band (24 cm wavelength) and S-band (10 cm wavelength). To achieve these observational characteristics, a reflector-feed system is considered, whereby the feed aperture elements are individually sampled to allow a scan-on-receive (“SweepSAR”) capability at both L-band and S-band. The instrument leverages the expanding capabilities of on-board digital processing to enable real-time calibration and digital beamforming. This paper describes the mission characteristics, current status of the L-band Synthetic Aperture Radar (L-SAR) portion of the instrument, and the technology development efforts in the United States that are reducing risk on the key radar technologies needed to ensure proper SweepSAR operations. 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, 2016 en_US
dc.subject Radar en_US
dc.subject beamforming en_US
dc.subject SAR en_US
dc.subject NISAR en_US
dc.subject SweepSAR en_US
dc.subject L-SAR en_US
dc.title NASA L-SAR instrument for the NISAR (NASA-ISRO) Synthetic Aperture Radar mission en_US
dc.type Preprint en_US

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