nonlinear_c

对指定文本文件进行检索 --搜索：给定一个查询串，在某个test.txt文档里面搜索是否包含该查询串。 (The specified text file retrieval Search: given a query string, in a test.txt document that contains the query string to search whether.)

图像增强：空域增强；灰度直方图；平滑滤波器和锐化滤波器的使用；图像中值滤波增强的使用；低通滤波器和高通滤波器的使用 (Image Enhancement: Enhanced airspace gray histogram use of the smoothing filter and sharpening filter the use of the enhanced image median filtering the use of low-pass filter and high-pass filter)

This m-file implements a simple data acquisition gui with multiple channels and custom triggering It demonstrates how to: 1) Use nested functions to simplify data acquisition programs 2) Use a simple GUI (a couple of pushbuttons) to start and stop data acquisition. 3) Wait for an event/trigger (like a button press) and log pre-event or pre-trigger data from multiple synchronized channels. 4) Record pretrigger data based on custom criteria. In this m-file the triggering event is a button click. However, the event could be any custom criterion (e.g., the data amplitude is greater than a threshold *and* a toggle button is enabled). Requires: the Data Acquisition Toolbox (TM) and the Winsound adapter. It does not depend on any hardware-specific capabilities. (This m-file implements a simple data acquisition gui with multiple channels and custom triggering It demonstrates how to: 1) Use nested functions to simplify data acquisition programs 2) Use a simple GUI (a couple of pushbuttons) to start and stop data acquisition. 3) Wait for an event/trigger (like a button press) and log pre-event or pre-trigger data from multiple synchronized channels. 4) Record pretrigger data based on custom criteria. In this m-file the triggering event is a button click. However, the event could be any custom criterion (e.g., the data amplitude is greater than a threshold*and* a toggle button is enabled). Requires: the Data Acquisition Toolbox (TM) and the Winsound adapter. It does not depend on any hardware-specific capabilities. )

二进制LDPC码的一种构造方法mackey构造，是学习LDPC码的基础(Binary LDPC code construction method mackey construction, is to learn the basis of LDPC codes)

<<信号与系统分析及MATLAB实现>>这本书的配套源代码(Signal and System Analysis and MATLAB implementation)

利用此程序，可以对图片的边缘特征进行提取，进而进行图片的分类，并统计出分类的正确率。(With this program, you can picture the edge feature extraction, and then classify pictures and statistics of the correct rate of classification.)

微粒群(PSO)优化算法进行图像匹配程序，MATLAB版。(Particle swarm optimization (PSO) algorithm for optimized image matching program, MATLAB version.)

说明：  stft的实验小程序，可以做个基础，然后据此展开做些复杂的东西(stft experiments applet)

Orthogonal Frequency Division Multiplexing bit error rate Measurement.

DOA估计的又一经典算法，和MUSIC相比，不需要谱峰搜索，相对更快捷！是利用空间旋转不变性求得波大方向。(DOA estimation is a classical algorithm, and compared to MUSIC, without spectral peak searching, relatively more efficient! Is the use of space rotation invariance to obtain the wave direction.)