zixiangguanfa

ADD PEPPER NOISE AND REMOVE IT USING SOURCE CODE

雷达原理的课件，详细讲述了雷达的工作原理，并附加对应的练习题(The radar principle courseware, describe in detail the working principle of the radar, and attach the corresponding exercises)

说明：  对机动目标进行跟踪,对初学者非常有用,可准确的跟踪目标(Tracking of mobile targets, very useful for beginners)

求N个字符的不重复排列数，不是标准的递归写法，供求职时笔试参考。(Seek N-character array of non-repetition number, not an ordinary recursive formulation for the job when the written reference.)

该程序是在flac下运行的，没找到flac，所以用matlab表示了，供岩土力学研究方向学习(The program is run under flac, did not find flac, so use matlab shows for rock mechanics research study)

二维波动方程的有限差分法，与解析解进行了误差比对(Finite difference method for two-dimensional wave equation)

说明：  在matlab上面对4fsk调制解调进行仿真，中间使用升余弦滤波器作为发送和接收滤波器(In the face of 4fsk modem matlab simulation, the middle raised cosine filter used to send and receive filters as)

一个国外出名的信息隐藏工具H4PGP，好用简单(A well-known abroad, information hiding tools H4PGP, easy to use simple)

运用插值的全矢量有限差分法求解阶跃光波导本征模式以及等效折射率 (Using the interpolation of full vector finite difference method to solve step eigen mode optical waveguide and equivalent refractive index )

小波去噪程序，包括一维的和二维的去噪程序，对程序的各部分进行了详细的注释。(Wavelet denoising procedures, including one-dimensional and two-dimensional de-noising process, the various parts of the program a detailed comment.)