Error analysis and verification of fully polarized microwave radiometer based on correlation coefficient

This paper introduces the basic principle of digital correlation full polarization microwave radiometer, and deduces the calculation method of correlation coefficient standard deviation and system error by sensitivity intermediate parameter, and average the measured data according to the actual application conditions of the microwave radiometer. The 10.7 GHz digital correlation full-polarization microwave radiometer developed by ourselves is verified by using full-polarization calibration source. The experimental results show that the standard deviation of the correlation coefficient and the calculation method of the system error are accurate, the system performance meets the practical application.