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Title: The Hydrosphere State (HYDROS) mission
Authors: Spence, Michael W.
Njoku, Eni
Kim, Yunjin
Entekhabi, Dara
Doiron, Terence
Piepmeier, Jeffrey
Girard, Ralph
Keywords: Hydrosphere State Mission (HYDROS)
Issue Date: 28-Sep-2004
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004.
Citation: AIAA Space Optical Science and Technology, San Diego, California, August 31 - September 31, 2005.
Abstract: The Hydrosphere State (HYDROS) Mission has been selected for the National Aeronautics and Space Administration (NASA) Earth System Science Pathfinder (ESSP) program. The objectives of HYDROS are to provide frequent, global measurements of surface soil moisture and surface freeze/thaw state. In order to adequately measure these geophysical parameters, a system capable of simultaneously measuring L-Band radiometer brightness temperatures at 40 km resolution and L-Band radar backscatter at 3 km resolution over a very wide swath is required. In addition, these science requirements must be satisfied under the stringent cost-cap imposed on all ESSP missions. As a solution to this challenging set of requirements, a relatively large, six meter, conically-scanning reflector antenna architecture was selected for the mission design. The HYDROS instrument will fly on a General Dynamics SA-200HP spacecraft bus. Although large deployable mesh antennas have been used in communication applications, this will mark the first time such technology is applied in a rotating configuration for high-resolution remote sensing.
Appears in Collections:JPL TRS 1992+

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