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The planned Soil Moisture Active Passive (SMAP) mission L-band radar/radiometer instrument

Show simple item record Spencer, Michael Wheeler, Kevin Chan, Samuel Piepmeier, Jeffrey en_US Hudson, Derek en_US Medeiros, James en_US 2013-07-25T14:00:57Z 2013-07-25T14:00:57Z 2011-07-25
dc.identifier.citation IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011, Vancouver, BC, Canada, July 24-29, 2011 en_US
dc.identifier.clearanceno 11-1791
dc.description.abstract The Soil Moisture Active/Passive (SMAP) mission is a NASA mission identified by the NRC 'decadal survey' to measure both soil moisture and freeze/thaw state from space. The mission will use both active radar and passive radiometer instruments at L-Band. In order to achieve a wide swath at sufficiently high resolution for both active and passive channels, an instrument architecture that uses a large rotating reflector is employed. The instrument system has completed the preliminary design review (PDR) stage, and detailed instrument design has begun. In addition to providing an overview of the instrument design, two recent design modifications are discussed: 1) The addition of active thermal control to the instrument spun side to provide a more stable, settable thermal environment for the radiometer electronics, and 2) A 'sequential transmit' strategy for the two radar polarization channels which allows a single high-power amplifier to be used. 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, 2011. en_US
dc.subject Soil Moisture Active Passive (SMAP) en_US
dc.subject radar en_US
dc.subject radiometer en_US
dc.title The planned Soil Moisture Active Passive (SMAP) mission L-band radar/radiometer instrument en_US
dc.type Preprint en_US

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