基于互功率谱的时延估计，有较好的参考价值，包含CV、CA、Single、当前、恒转弯速率、转弯模型，搭建OFDM通信系统的框架，旋转机械二维全息谱计算，在MATLAB中求图像纹理特征。- Based on the time delay estimation of power spectrum, There are good reference value, It contains CV, CA, Single, current, constant turn rate, turning model, Build a framework OFDM communication system, Rotating machinery 2-d holographic spectrum calculation, In the MATLAB image texture feature.