中文说明：能量谱分析计算,有循环检测，周期性检测，实现了图像的灰度化并进一步用于视频监视控，使用拉亚普诺夫指数的公式，相控阵天线的方向图（切比雪夫加权），基于小波变换的数字水印算法matlab代码。
English Description：
Analysis and calculation of energy spectra, cycle detection, periodic testing, realization of image gray-level and further used for video surveillance and control, use the layapunuofu index formula, phased array antenna pattern (weighted Chebyshev), digital watermarking algorithm based on wavelet transform Matlab code.