中文说明：ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，旋转机械二维全息谱计算的实用例程，是小学期课程设计的题目，空间目标识别，采用PM算法，使用拉亚普诺夫指数的公式，通过反复训练模板能有较高的识别率。
English Description：
Simulation of the OFDM system with 16qam modulation FFT window plus CP modules, calculation of two-dimensional holospectrum in rotating machinery and practical routines were semester courses designed for small topics, space target recognition, PM algorithm is used, use the layapunuofu index formula through practice templates can have a higher recognition rate.