Title :
Radiometric analysis of the rotating synthetic aperture radiometers utilizing grid-based measurement approach
Author :
Liu, Hao ; De Maagt, Peter ; Christensen, Jacob ; Emrich, Anders ; Wu, Ji
Author_Institution :
Chinese Acad. of Sci., Beijing
Abstract :
Synthetic aperture radiometers with a rotating thinned array can effectively reduce the number of antenna units required for the applications with very high spatial resolution, like GEO atmospheric sounding. The rotating array results in non-regular distributed visibility samples. A grid-based measurement approach is proposed in this paper to facilitate the image reconstruction and system performance evaluation, especially the radiometric sensitivity computation.
Keywords :
geophysical techniques; image reconstruction; radiometers; radiometry; GEO atmospheric sounding; Geostationary Earth Orbit; grid-based measurement approach; high spatial resolution; image reconstruction; radiometric analysis; radiometric sensitivity computation; rotating thinned array; synthetic aperture radiometers; system performance evaluation; Antenna arrays; Antenna measurements; Aperture antennas; Atmospheric measurements; Image reconstruction; Radiometers; Radiometry; Rotation measurement; Spatial resolution; System performance; GAS; Grid-based approach; radiometric sensitivity; synthetic aperture radiometer;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4422773
