利用最小二乘法进行拟合多元非线性方程，分析了该信号的时域、频域、倒谱，循环谱等,重要参数的提取。- Multivariate least squares fitting method of nonlinear equations, Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Extract important parameters.

包括轨道机动仿真、初轨计算,利用最小二乘法进行拟合多元非线性方程，利用自然梯度算法。- Including orbital maneuvering simulation, initial orbit calculation, Multivariate least squares fitting method of nonlinear equations, Use of natural gradient algorithm.

利用最小二乘法进行拟合多元非线性方程，包括最后计算压缩图像的峰值信噪比和压缩效果的源码,信号处理中的旋转不变子空间法。- Multivariate least squares fitting method of nonlinear equations, Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, Signal Pr

利用最小二乘法进行拟合多元非线性方程，IMC-PID是利用内模控制原理来对PID参数进行计算，仿真效果非常好。- Multivariate least squares fitting method of nonlinear equations, The IMC- PID is using the internal model control principle for PID parameters is calculated, Simulation of the effect is very g