插值与拟合，解方程，数据分析，合成孔径雷达（SAR)目标成像仿真，进行逐步线性回归，是信号处理的基础，鲁棒性好，性能优越，已调制信号计算其普相关密度，实现了对10个数字音的识别程序一个很有用的程序。- Interpolation and fitting, solution of equations, data analysis, Synthetic Aperture Radar (SAR) imaging simulation target, Stepwise linear regression, Is the basis of the signal processing, Robustness, superior performance, Modulated signals to calculate its density Pu-related, Realization of 10 digital audio recognition program A very useful program.