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Title: The HYDROS mission : requirements and baseline system design
Authors: Njoku, Eni
Spencer, Michael
McDonald, Kyle
Smith, Joel
Houser, Paul
Doiron, Terence
O'Neill, Peggy
Girard, Ralph
Entekhabi, Dara
Keywords: soil moisture
Hydrosphere State (HYDROS) mission
Issue Date: 6-Mar-2003
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004.
Citation: IEEE Aerospace Conference, Big Sky, Montana March 6-13, 2004.
Abstract: The HYDROS mission is under development by NASA as part of its Earth System Science Pathfinder (ESSP) program. HYDROS is designed to provide global maps of the Earth's soil moisture and freezel/thaw state every 2-3 days, for weather and climate prediction, water and carbon cycle studies, natural hazards monitoring, and national security applications. HYDROS uses a unique active and passive L-band microwave system that optimizes measurement accuracy, spatial resolution, and coverage. It provides measurements in nearly all weather conditions, regardless of solar illumination. The designs of the radar and radiometer electronics, antenna feedhorn and reflector, and science data system, are driven by specific mission and science objectives. These objectives impose requirements on the frequencies, polarizations, sampling, spatial resolution, and accuracy of the system. In this paper we describe the HYDROS mission requirements, baseline design, and measurement capabilities.
Appears in Collections:JPL TRS 1992+

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