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Initial results of the Geosynchronous Synthetic Thinned Array Radiometer (GeoSTAR)

Show simple item record Tanner, Alan B. Wilson, W. J. Lambrigsten, B. H. Dinardo, S. J. Brown, S. T. Kangaslahti, P. Gaier, T. C. Ruf, C. S. Gross, S. M. Lim, B. H. Musko, S. Rogacki, S. 2006-10-27T15:41:40Z 2006-10-27T15:41:40Z 2006-07-26
dc.identifier.citation IEEE GeoScience and Remote Sensing Symposium, Denver, Colorado, July 26 - August 4, 2006. en
dc.identifier.clearanceno 06-1240
dc.description.abstract An error budget is presented to meet 1 Kelvin radiometric accuracy in a geostationary atmospheric sounder with 50 km spatial resolution on the earth. The gain and phase errors are weighted by the magnitude of visibility versus antenna separation, and requirements range between ~0.5% and 0.3 degrees of amplitude and phase, respectively, for the closest spacings at the center of the array, and about 5% and 3 degrees for the majority of the array. The latter requirement is met by our design without any special testing or stabilizations by reference signals. The former is met using an internal noise diode reference and by measuring the detailed antenna patterns on the antenna range. Biases and other additive errors in the raw visibility samples must be below about 2 mK on average, and this requirement is met by a phase shifting scheme applied to the local oscillator distribution. An outline of the data processing is presented, along with the first images from this system. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 277925 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006. en
dc.subject microwave radiometers en
dc.subject Synthetic Thinned Aperture Radiometer (STAR) en
dc.subject aperture synthesis en
dc.subject interferometer en
dc.subject remote sensing en
dc.title Initial results of the Geosynchronous Synthetic Thinned Array Radiometer (GeoSTAR) en
dc.type Preprint en

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