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几个关于有限元分析的代码，《结构分析的有限元法与matlab编程》-徐荣桥(Several finite element analysis on the code, " Structural Analysis of the finite element method and matlab programming" - Xu Rong Bridge)

二相编码雷达脉冲雷达信号的参数提取。在二相编码雷达脉冲信号上加入噪声，然后在提取改信号的频率(Second phase coding parameter extraction radar pulse radar signals. Join noise in the two-phase encoded radar pulses, and then change the frequency of the signal extraction)

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.)

AHB master monitor for verification

说明：  MATLAB函数速查手册，说明了大部分函数的功能(Quick Guide MATLAB function, indicating that the majority of functionality)

说明：  卡尔曼滤波简单例程，一维情况。An Introduction to Kalman Filter中的例子。(Kalman filter is simple routines, one-dimensional situation. An Introduction to Kalman Filter in the example.)

matlab与R的命令对比，双剑合璧，充分发挥各自的优势。(matlab command comparison with R, two-pronged, give full play to their strengths.)

RPH tool is Matlab algoritm for Rock physics analysis

修改版的matlab画K线的程序，实现了涨为红色，跌为绿色(Modified version of the matlab draw K-line procedures, the rose is red, or green )

Parallel active power filter