Title :
Evaluation of disturbance in the antenna calibration of the microwave radiometer
Author :
Li, Zhiping ; Peng, Yi ; Miao, Jungang ; Wang, Zhenrong
Author_Institution :
Electromagn. Lab., Beihang Univ., Beijing
Abstract :
In the microwave radiometer calibration, the calibration low temperature load immerged in the liquefacient nitrogen is equipped with a metallic shield. The metal shield, the environment thermal noise and the inverse radiation are found causing aberration on the calibration measurement. A ray- tracing model is constructed for the metal shield aberration and the full-wave EM simulation is implemented in the two latter aberrations. The influences from the corresponding disturbances are evaluated numerically in this paper.
Keywords :
radiometers; radiometry; ray tracing; antenna calibration; metallic shield; microwave radiometer; ray- tracing model; Antenna measurements; Brightness temperature; Calibration; Loaded antennas; Microwave antennas; Microwave radiometry; Microwave theory and techniques; Noise measurement; Receiving antennas; Working environment noise;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-1879-4
Electronic_ISBN :
978-1-4244-1880-0
DOI :
10.1109/ICMMT.2008.4540522
