Title :
The impact of antenna pattern frequency dependence in aperture synthesis microwave radiometers
Author :
Camps, A. ; Corbella, I. ; Torres, F. ; Duffo, N. ; Vall-llosera, M. ; Martin-Neira, M.
Author_Institution :
Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
The effect of the frequency dependence of the antenna voltage patterns within the bandwidth of an aperture synthesis interferometric radiometer is studied and quantified using actual antenna voltage patterns measured at different frequencies for the first nine receivers of the Microwave Imaging Radiometer with Aperture Synthesis instrument aboard the European Space Agency´s Soil Moisture and Ocean Salinity mission. A technique is proposed to mitigate this effect.
Keywords :
hydrological techniques; microwave measurement; moisture; oceanographic techniques; radiometers; radiometry; remote sensing; soil; ESA; European Space Agency; MIRAS; Microwave Imaging Radiometer with Aperture Synthesis instrument; SMOS; Soil Moisture and Ocean Salinity mission; antenna voltage patterns; aperture synthesis microwave radiometer; interferometric radiometer; radiometry; Antenna measurements; Aperture antennas; Bandwidth; Frequency dependence; Frequency measurement; Microwave antennas; Microwave measurements; Radiometers; Receiving antennas; Voltage measurement; Antenna pattern; interferometer; microwave radiometer; radiometry;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2005.854309
