Title :
The calibration target for FY-3 space-borne microwave humidity sounder
Author :
Cheng, C.Y. ; Nian, F. ; Chen, T. ; Yang, C.T. ; Chen, Y.M. ; Chen, J.L.
Author_Institution :
Beijing Inst. of Radio Metrol. & Meas., Beijing, China
Abstract :
A general introduction is presented in this digest to describe configuration, operational theory and technical specifications of the calibration target for FY-3 space-borne microwave humidity sounder of china. The target with the temperature-adjusted function based on PID controller can provide the brightness temperature output form 90K~350K and its uncertainty is 1.2K~1.6K (k=2) in 75GHz~220GHz. The traceability for brightness temperature of the calibration target is achieved by calibrating sensors embedded inside the calibration target and by emissivity international comparison. The experimental results and further analysis are also provided in this digest.
Keywords :
artificial satellites; brightness; calibration; humidity measurement; humidity sensors; meteorological instruments; microwave devices; microwave measurement; three-term control; China; FY-3 space-borne microwave humidity sounder; PID controller; brightness temperature output form; calibrating sensor; calibration target; emissivity international comparison; frequency 75 GHz to 220 GHz; operational theory; technical specification; temperature 1.2 K to 1.6 K; temperature 90 K to 350 K; temperature-adjusted function; Brightness temperature; Calibration; Microwave radiometry; Microwave theory and techniques; Standards; Temperature measurement; Temperature sensors; FY-3; brightness temperature; emissivity; microwave humidity sounder; radiometer calibration;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250645
