The Simulation and Measurement of Scattering Property and Emissivity of the Microwave Radiometer Calibrator

摘要

The accuracy of measurement of calibrator emissivity is necessary for calibration of microwave radiometer. In this paper, the optimization of calibration source is presented, and the method of bistatic measurement system was chosen to measure the emissivity of calibration source, which is periodic cone array. The scattering property is measured and the emissivity of the calibrator is evaluated using bistatic measurement. The measurement is used to analyze scattering field of the calibrator as well as obtain the emissivity by integrating the differential scattering coefficient of the backscattered field.