采用波束成形技术的BER计算，包含特征值与特征向量的提取、训练样本以及最后的识别，利用贝叶斯原理估计混合logit模型的参数。- By applying the beam forming technology of BER Contains the eigenvalue and eigenvector extraction, the training sample, and the final recognition, Bayesian parameter estimation principle mixed logit model.