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Comparison of Model Prediction With Measurements of Galactic Background Noise at L-Band

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6 Author(s)
D. M. Le Vine ; Instrum. Sci. Branch, Goddard Space Flight Center, Greenbelt, MD, USA ; S. Abraham ; Y. H. Kerr ; W. J. Wilson
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The 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 sources (mostly galactic) is strong in this window, and an accurate accounting of this background radiation is often needed for calibration. This paper presents a comparison of the background radiation predicted by a model developed from modern radio astronomy measurements with measurements made with several modern L-band remote sensing radiometers. The comparison validates the model and illustrates the magnitude of the correction necessary in remote sensing applications.

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IEEE Transactions on Geoscience and Remote Sensing  (Volume:43 ,  Issue: 9 )