随机调制信号下的模拟ppm，详细画出了时域和频域的相关图，大学数值分析算法，迭代自组织数据分析，基于分段非线性权重值的Pso算法，采用偏最小二乘法，借鉴了主成分分析算法（PCA）。-Random ppm modulated analog signal under Correlation diagram shown in detail the time domain and frequency domain, University of numerical analysis algorithms, Iterative self-organizing data analysis, Based on piecewise nonlinear weight value Pso algorithm, Partial least squares method, It draws on principal component analysis algorithm (PCA).