numerical_differentiation

Its a source code in MATLAB

用matlab制作的模拟动画程序，内容为电梯的升降演示。(Animation produced using matlab simulation program, the content of the elevator lift demonstration.)

完全适用于摄影测量解析相对和绝对定向的matlab程序文件(Absolute Orientation & Relative Orientation)

MATALAB功能强大且编程方便，广泛应用于各种算法的性能评估。文章简要 介绍了LSF声道滤波器原理，给出了用MATLAB实现LSF滤波器的流程图和程序代码。(MATALAB powerful programming convenience, which are widely used algorithms performance evaluation. The article briefed the LSF channel filter principle, given MATLAB LSF filter the flow chart and code.)

本例子对软件接收机中画图等部分做了较为详细的说明，可以作为参考使用。(The example of the software receiver drawing part is described in detail, can be used as reference.)

对线性调频信号的回波脉冲，匹配滤波，脉冲压缩，MTI,MTD处理进行仿真(Simulation of LFM signal echo pulse, matched filtering, pulse compression, MTI, MTD processing is carried out)

qfsk调制，可使用各个通信系统模块，非常好用，简单易懂(qfsk modulation can be used in various communication system module, very easy to use, simple to understand)

Genetic algorithm code

matlab常用函数查询，编程很有用的东西。(matlab commonly used functions query)

主成分分析源代码，有详细说明，中文详细说明(Principal Component Analysis Matlab CODE)