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基于matlab的新型信号处理算法集。包括模拟退火、遗传算法、反向传播神经网络、小波变换等等，对于统计信号处理很有参考价值。(Matlab based on a new type of signal processing algorithms. Including simulated annealing, genetic algorithm, back-propagation neural network, wavelet transform, etc., for statistical signal processing useful reference value.)

frequency hop spread spectrum technology for secure data tranfer

已知空间三个点的坐标，求通过三个点的圆的圆心和半径，输入为三个点(Known spatial coordinates of three points, three points of the circle which passes through the center and radius, enter three points)

实现ID3 决策树算法，并使用MATLAB自带的工具箱函数画出决策树生成相应的规则(Achieve ID3 decision tree algorithm, and using MATLAB toolbox function that comes with the decision tree to generate the appropriate rules to draw)

基于costas环路的载波同步，使收发时钟频率和相位一致，环路包括四个部分乘法器和低通滤波、鉴相器、环路滤波器和数字振荡器组成(Based on the carrier synchronization of Costas loop, the frequency and phase of the transmit and receive clock is the same. The loop consists of four parts, including the multiplier and low-pass filter, phase detector, loop filter and digital oscillator.)

MATLAB6.0数学手册的电子书，很不错，大家可以下载下来参考一下(MATLAB6.0 Mathematics e-book manual, very good, everyone can download it for reference)

图像的matlab处理，包含图像的压缩，zigzag算法应用，图像加密，图像解密等(Matlab image processing, compression containing images, zigzag algorithm, image encryption, decryption image)

assingment problem With this package, I provide some MATLAB-functions regarding the rectangular assignment problem. This problem appears for example in tracking applications, where one has M existing tracks and N new measurements. For each possible assignment, a cost or distance is computed. All cost values form a matrix, where the row index corresponds to the tracks and the column index corresponds to the measurements. The provided functions return an optimal or suboptimal assignment - in the sense of minimum overall costs - for the given matrix.

this file can be interpreted as a source code

说明：  输入圆的半径求周长和面积。程序由三个函数组成：主函数进行输入输出和函数调用，perimeter函数求周长，area函数求面积。(Enter the radius of the circle circumference and area requirements. Program consists of three functions: the main input and output functions and function calls, perimeter function evaluation perimeter, area function for the area.)