中文说明：基于kaiser窗的双谱线插值FFT谐波分析，基于互功率谱的时延估计，信号处理中的旋转不变子空间法，实现了图像的灰度化并进一步用于视频监视控，主同步信号PSS在时域上的相关仿真，用平面波展开法计算二维声子晶体带隙。
English Description：
Based on Kaiser window double spectrum line interpolation FFT harmonic analysis, based on the cross power spectrum time delay estimation, signal processing of rotation invariant subspace method, the realization of the gray scale image and further used for video monitoring and control, the primary synchronization signal (PSS) in the time domain simulation, using the plane wave expansion method calculation of two-dimensional phononic crystals bandgap.