Le Vine, David M.3; Abraham, Saji3; Kerr, Yann H.3; Wilson, William J.3; Skou, Niels4; Søbjærg, Sten Schmidl4
1 Electromagnetic Systems, Department of Electrical Engineering, Technical University of Denmark2 Department of Electrical Engineering, Technical University of Denmark3 unknown4 National Space Institute, Technical University of Denmark
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.
I E E E Transactions on Geoscience and Remote Sensing, 2005, Vol 43, Issue 9, p. 2018-2023