Title :
A method for calibrating the ground-based triple-channel microwave radiometer
Author_Institution :
Inst. of Atmos. Phys., Acad. Sinica, Beijing, China
Abstract :
Based on the high correlation between the brightness temperatures (TBs) measured by the ground-based triple-channel microwave radiometer at 20.6, 31.65, and 90.0 GHz, a new calibration method is proposed with which the calibration coefficients and sky TBs can simultaneously be obtained by solving the systems of nonlinear equations expressing the radiometric outputs at 6 observation angles. The feasibility of this calibration method has been demonstrated by numerical simulations. Its further test will be carried out in applications with realistic measurement data
Keywords :
calibration; microwave measurement; radiometers; calibration coefficients; calibration method; ground-based radiometer; nonlinear equations; numerical simulations; radiometric outputs; sky brightness temperatures; triple-channel microwave radiometer; Atmospheric measurements; Brightness temperature; Calibration; Costs; Microwave measurements; Microwave radiometry; Microwave theory and techniques; Nonlinear equations; Temperature measurement; Voltage;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768469
