nmpc

数据回归计算logistic_regression(Data regression calculation logistic_regression)

利用matlab实现了fft和ifft算法，并给出了利用fft算法解决微分方程的问题的方法。(Fft using matlab achieved and ifft algorithms, and is given the use of fft algorithm to solve the differential equation problem.)

数学建模中的最优路径选择问题，通过数学建模，matalb编程找到最有路劲，最优策略(Mathematical model interpolation algorithm, with the mathematical modeling, use of matble programming solve interpolation fitting mathematical modeling optimal path problem and investment examples solutions, through the matalb programming solve the above problem of mathematical modeling the optimal path choice, through the mathematical modeling, matalb programming to find the most road strength, the optimal strategy )

说明：  GNSS软件接收机，用于对中频信号的处理及导航定位解解算(GNSS Software receiver.It is used to process if signal and solve navigation and positioning.)

这是用用 Floyd 算法求任意两点间的最短路径及最短路长的程序 (This is by using Floyd algorithm for arbitrary shortest path between two points and the shortest path length of the procedure)

高频地波雷达完整仿真matlab程序,可以实现地波传播模块、目标回波功率模块等6个模块的仿真(HF ground wave radar matlab simulation program integrity)

很全的时频分析工具，很全的时频分析工具。。(Is the whole time-frequency analysis tool, is the whole time-frequency analysis tools. .)

matalab similink 单相锁相环 仿真建模(matalab similink singal PLL simulation)

GMRES(Generalized minimal residual) Iterative Method. A is a square matrix.

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)