NCD

采用matlab实现正交频分复用技术，用于各种现代数字处理中。(Using matlab to achieve orthogonal frequency division multiplexing, for a variety of modern digital processing.)

基于GMM的说话人识别程序，提取梅尔倒谱特征进行训练(voice detection based on GMM)

windows环境下的截包代码，学习用，很有价值(windows environment cut package code, learn to use, great value)

用的db2小波对图像进行分解重构，小波函数可以换(wavelet analysis of figure by db2 )

用来做灰色预测的源代码，适用于小样本的预测，精度较高(Used for gray prediction of source code, applies to small sample forecast accuracy)

说明：  基于MATLAB的布莱克曼窗法带通滤波设计(The Blackman window method based on MATLAB bandpass filter design)

说明：  用MATLAB实现的数字水印的DCT算法，还包括本次试验的实验报告，对算法有详细的解读！(Implemented using MATLAB DCT digital watermarking algorithm, also including the test lab report, a detailed interpretation of the algorithm!)

最小选择恒虚警检测——SO-CFAR检测器：包括对于无目标、仅有噪声的信号进行SO-CFAR检测的仿真，以及对于含目标、且在瑞利杂波背景下的CA算法仿真。一些程序主要是为了绘图，画出SO-CFAR检测过程中的信号波形以及检测门限对比图；而另一些程序是为了计算SO-CFAR检测过程中的检测概率和虚警概率。(SO-CFAR detectors: simulations of detection to signals with no target but noise only, as well as signals with target and the background of Rayleigh clutter. Some programs are aimed at giving pictures of the signals and detectiong threshold in the process of detection using SO-CFAR algorithm, while other programs are aimed at calculating the detecting rate and false alarm rate of SO-CFAR algorithm.)

Revival of a 14 years old code (written in 1991 for MATLAB 2.x). Given a set of measured x,y pairs that a re supposed to reside on a circle, but with some added noise. A circle to these points, i.e. find xc,yc,R, such that (x-xc)^2+(y-yc)^2=R^2 The method minimizes the sum of squared radial deviations.

此程序为多点DBS仿真程序，通过设置航线初始距离和初始扫描角来模拟不同斜视角下DBS成像的结果 包含回波产生程序和DBS成像程序(This program is multi-DBS simulation program, by setting the initial distance routes and the initial results of the scan angle to simulate the different squint DBS imaging comprises imaging echo generator and DBS Bank program)