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Title: GeoSTAR - a microwave sounder for geostationary satellites
Authors: Lambrigtsen, Bjorn
Wilson, William
Tanner, Alan
Gaier, Todd
Ruf, Chris
Piepmeier, Jeff
Keywords: microwave
atmospheric sounding
aperture synthesis
Issue Date: 20-Sep-2004
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2004.
Citation: IEEE International Geoscience and Remote Sensing, Anchorage, Alaska, September 20 - 24, 2004.
Abstract: GeoSTAR represents a new approach to microwave atmospheric sounding that is now under development. It has capabilities similar to sensors currently operating on low earth orbiting weather satellites but is intended for deployment in geostationary orbit - where it will complement future infrared sounders and enable allweather temperature and humidity soundings and rain mapping. The required spatial resolution of 50 km or better dictates an aperture of 4 meters or more at a sounding frequency of 50 GHz, which is difficult to achieve with a real aperture system - this is the reason why it has until now not been possible to put a microwave sounder on a geostationary platform. GeoSTAR is instead based on a synthetic aperture imaging approach. Among the advantages of such a system are that there are no moving parts, and the size of the aperture is easily expandable to meet future needs. A ground based prototype of GeoSTAR is currently under development in an effort led by the Jet Propulsion Laboratory.
Appears in Collections:JPL TRS 1992+

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