多抽样率信号处理，最大似然（ML）准则和最大后验概率（MAP）准则，一种噪声辅助数据分析方法,考虑雨衰 阴影 和多径影响，鲁棒性好，性能优越，使用大量的有限元法求解偏微分方程。- Multirate signal processing, Maximum Likelihood (ML) criteria and maximum a posteriori (MAP) criterion, A noise auxiliary data analysis method, Consider shadow rain attenuation and multipath effects Robustness, superior performance, Using a large number of finite element method to solve partial differential equations.