esprit算法对有干扰的信号频率进行估计,包括最小二乘法、SVM、神经网络、1_k近邻法,借鉴了主成分分析算法（PCA）。- esprit algorithm signal frequency interference can be assessed Including the least squares method, the SVM, neural networks, 1 _k neighbor method, It draws on principal component analysis algorithm (PCA).