中文说明：借鉴了主成分分析算法（PCA），课程设计时编写的matlab程序代码，多元数据分析的主分量分析投影，复化三点Gauss-lengend公式求pi，合成孔径雷达（SAR)目标成像仿真，使用大量的有限元法求解偏微分方程。
English Description：
Using principal component analysis (PCA) algorithm and matlab code written curriculum design, multivariate data analysis principal component projection analysis and complex of the three Gauss-lengend formula for PI, synthetic aperture radar (SAR) target imaging simulation, using a large number of finite element method for solving partial differential equations.