program_before

matlab小程序实例，对掌握matlab很有用处。(matlab applet instance, the master matlab useful.)

simulation of a channel using BPSK and QPSK

使用matlab，用于基于奇异值分解（SVD）的图像压缩(image compression based on Singular value decomposition (SVD))

说明：  这个程序用于语音段的过零率求取，基于matlab，可以用来做端点检测。(The program segment for voice strike zero rate, based on matlab, can be used for endpoint detection.)

说明：  模糊控制matlab，倒立摆，应该会有用(Fuzzy control matlab, inverted pendulum, should be used)

根据卫星星历及测者位置，判断卫星是否可见(satellite ephemeris and location were measured to determine whether the satellite can be seen)

编写一个可以增强图像的函数，可以使得图像的灰度级转变。(Write a function that can enhance the image, you can make changes in the gray level of the image.)

说明：  lssvm工具箱英文版帮助文档，v1.8(LSSVM toolkit tutorial v1.8)

cycloconverter with step down

说明：  加速度到位置的二次积分模型，采用simulink编写，带加速度噪声，可用于简单的导航位置与实际位置仿真(Acceleration to the position of the double integration model, using simulink writing, with acceleration noise can be used for simple simulation of the actual location of the navigation position)