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Comparison of Model Prediction with Measurements of Galactic Background Noise at L-BandThe spectral window at L-band (1.413 GHz) is important for passive remote sensing of surface parameters such as soil moisture and sea surface salinity that are needed to understand the hydrological cycle and ocean circulation. Radiation from celestial (mostly galactic) sources is strong in this window and an accurate accounting for this background radiation is often needed for calibration. Modem radio astronomy measurements in this spectral window have been converted into a brightness temperature map of the celestial sky at L-band suitable for use in correcting passive measurements. This paper presents a comparison of the background radiation predicted by this map with measurements made with several modem L-band remote sensing radiometers. The agreement validates the map and the procedure for locating the source of down-welling radiation.
Document ID
20040082013
Document Type
Preprint (Draft being sent to journal)
Authors
LeVine, David M. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Abraham, Saji (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Kerr, Yann H. (Centre National d'Etudes Spatiales Toulouse, France)
Wilson, Willam J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Skou, Niels (Technical Univ. of Denmark Lyngby, Denmark)
Sobjaerg, S. (Technical Univ. of Denmark Lyngby, Denmark)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Acoustics
Distribution Limits
Public
Copyright
Other