s_power_spectrum

some matlab functions negative, histogram equ. and reading, writing images

本程序实现了：船舶运动控制中的模型参数拟合过程与实现。(Modelling parameters fitting and realize in the boat dynamic controll.)

存在麦克风增益相位误差时候的宽带波束形成器设计,采用最小二乘方法来实现。 (Phase error exists when the microphone gain broadband beamformer design, using the least squares method to implement.)

Simple steganography code to hide text inside image The code include embedding and extracting procedure

将.bmp或者.pgm文件批量转换为.jpg文件格式的matlab程序，可以很方便的进行文件管理(Converted to jpg file format matlab program, you can easily file management. Bmp or. Pgm file batch)

说明：  扩频系统中的小实验，具体介绍在文件kuopin_all中有介绍。(spread spectrum system of small experiments, which are detailed in the document kuopin_all were introduced.)

适合有一定基础的学生学习，比较简单的小例子，合适初学者(There is some basis for students to learn, simple small example, suitable for beginners)

说明：  power算法，可用于求解大型矩阵特征值问题，对小型矩阵同样适用(power algorithm, can be used for solving large matrix eigenvalue problem, apply equally to small matrix)

详细地描述了基于matlab车牌识别的程序代码，包含几个可以实现的例子。(Detailed description of the program code based on the matlab license plate recognition, including several examples can be achieved.)

一个可以画四个纵坐标的Matlab程序，包括一个测试文件(One can draw four vertical coordinates of the Matlab procedures, including a test file)