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计算三维模型检索结果的PR曲线（precision recall curve）(compute precision recall curve for 3D model retrieval results )

基于MATLAB的OFDM发送，接收端程序。(MATLAB based on the OFDM transmission, the receiving end procedures.)

A local variable item: either a name or a signature or both.

线性调频信号仿真，及时域频域脉冲压缩，加窗处理抑制旁瓣(LFM signal simulation, pulse compression in time domain and frequency domain, windowed processing to suppress sidelobes)

说明：  代码完成的功能是OFDM的仿真，可以显示误码率以及各路波形和星座图(The function of the code is OFDM simulation, which can display the bit error rate, waveform and constellation)

北航研究生课程，卡尔曼滤波与组合导航课程作业第一题(Buaa graduate kalman filter 1 course)

simulink仿真实现DCDC升降压变换。内涵编号的文件以及参考文献进行参数设置(simulink Simulation DCDC step-down conversion. Connotation numbered files and references set parameters)

该程序是信号的多普勒现象，通过设置不同的参数，可得到不同的现象，具有一定的参考价值。(that the procedure was the Doppler signal, by setting different parameters, will be different, has some reference value.)

本压缩包里的文件包括MATLAB编写的数字识别程序以及所用的数字样本，供大家参考。(Number Recognition)

gp算法计算关联维数源程序，内有Lorenz数据，可根据自己数据改写(gp correlation dimension algorithm source code, there Lorenz data, the data can be rewritten according to their own)