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

D.M. Le Vine,; S. Abraham; Yann Kerr; W.J. Wilson; N. Skou; S. Schmidl Sobjaerg

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

D.M. Le Vine, ^{1, *} S. Abraham ¹ Yann Kerr ² W.J. Wilson ³ N. Skou ⁴ S. Schmidl Sobjaerg ⁴

* Corresponding author

1 GSFC - NASA Goddard Space Flight Center

2 CESBIO - Centre d'études spatiales de la biosphère

3 JPL - Jet Propulsion Laboratory

4 Ørsted-DTU

Abstract : 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.

Keywords : remote sensing Galactic background microwave radiometry remote sensing.

Document type :

Journal articles

Domain :

Life Sciences [q-bio] / Ecology, environment / Ecosystems

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

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

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