Title :
The influence of phase and amplitude fluctuations of microwaves in troposphere on SAR operation
Author :
Kulemin, G.P. ; Lukin, V.V. ; Zelensky, A.A.
Author_Institution :
Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine
Abstract :
An essential influence on SAR operation can be caused by both attenuation of microwaves in the troposphere, clouds and precipitations and the phase and amplitude fluctuations of SAR received signal resulting from radiowave propagation through a random inhomogeneous medium. In other words, there are deterministic and stochastic components of errors determining SAR calibration accuracy. Here we suppose that SAR external calibration using a sample reflector is performed. Besides, the considered effects influence the remote sensing data interpretation accuracy evaluation of intensity ratios for small-size objects and even large area fragments
Keywords :
atmospheric precipitation; calibration; fluctuations; microwave imaging; microwave propagation; radar imaging; remote sensing by radar; synthetic aperture radar; tropospheric electromagnetic wave propagation; SAR calibration accuracy; SAR operation; amplitude fluctuations; attenuation; clouds; deterministic components; phase fluctuations; precipitation; random inhomogeneous medium; remote sensing data interpretation accuracy; sample reflector; stochastic components; troposphere; Airborne radar; Attenuation; Calibration; Clouds; Fluctuations; Frequency; Radar remote sensing; Sea surface; Spaceborne radar; Terrestrial atmosphere;
Conference_Titel :
Physics and Engineering of Millimeter and Submillimeter Waves, 1998. MSMW '98. Third International Kharkov Symposium
Conference_Location :
Kharkov
Print_ISBN :
0-7803-5553-9
DOI :
10.1109/MSMW.1998.755494
