Title :
Optimal calibration of radiometer using Wiener filters
Author :
Adelberg, L.K. ; Gasiewski, A.J. ; Jackson, D.M.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
In microwave and millimetric radiometry, hot and cold blackbody targets of known temperature and emissivity are used to calibrate radiometers. The calibration process involves estimating two slowly time-varying system parameters (gain and offset) from noisy observations of these targets. The purpose of this paper is to discuss the application of optimal filters to the calibration of radiometers suitable for terrain mapping. The Wiener filter is found to be suitable
Keywords :
calibration; filtering and prediction theory; geophysical techniques; microwave imaging; radiometry; remote sensing; Wiener filter; calibrate; cold blackbody target; geophysical measurement technique; land surface terrain mapping; microwave radiometry; millimetric; mm wave; optimal calibration; optimal filter; radiometer; slowly time-varying system parameters; Atmosphere; Calibration; Microwave filters; Microwave radiometry; Microwave technology; Nonlinear filters; Oceans; Temperature; Time varying systems; Wiener filter;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322736
