复化三点Gauss-lengend公式求pi，解耦，恢复原信号，多目标跟踪的粒子滤波器，进行逐步线性回归，模式识别中的bayes判别分析算法，数学方法是部分子空间法，最小二乘回归分析算法，包含了阵列信号处理的常见算法。- Complex of three-point Gauss-lengend the Formula pi, Decoupling, restore the original signal, Multi-target tracking particle filter, Stepwise linear regression, Pattern Recognition bayes discriminant analysis algorithm, Mathematics is part of the subspace, Least-squares regression analysis algorithm, Contains a common array signal processing algorithm.