考虑雨衰 阴影 和多径影响，到达过程是的泊松过程，从先验概率中采样，计算权重，包含特征值与特征向量的提取、训练样本以及最后的识别，主要为数据分析和统计，采用的是脉冲对消法。- Consider shadow rain attenuation and multipath effects Arrival process is a Poisson process, Sampling　a priori probability, calculate the weight, Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Mainly for data analysis and statistics, It uses a pulse of consumer law.