stdepoch

余弦波是渐变的，当ωt+φ的取值变化量很小时，Y的变化量也是很微小的。余弦波的这一特性保证了嵌入水印后相邻字符灰度值差别不大，人眼无法识别，从而保证了水印的不可见性和图像质量。(Cosine wave is gradual, and when ωt+ φ values variation is very small, Y amount of change is very small. Cosine waves This feature ensures that watermarked gray value of adjacent character is not very different, the human eye does not recognize, thus ensuring the invisibility of watermark and image quality.)

一个基于matlab的卡曼滤波程序，有说明，调试完毕，可以使用(Based on the matlab program Kalman filtering, a description of commissioning is completed, you can use)

利用MATLAB对图像进行分解为高频和低频部分，在重构得到图像的高低频部分并显示出来(MATLAB decomposed into high-frequency and low-frequency part of the image, the high-low-frequency part of the image in the reconstruction and display.)

基于参数和非参数的多种频谱检测算法研究及仿真结果分析。(Based on the parameters and non-parametric multi-spectrum detection algorithm research and analysis of simulation results.)

说明：  非线性自适应滤波器MATLAB程序，含VLMS和VRLS以及输入输出文件(nonlinear filter MATLAB procedures, including VLMS VRLS and import and export documents)

说明：  Alamouti 分集方案的仿真程序 能仿真 空时分组码的 信噪比(Alamouti diversity scheme of simulation program)

遗传算法( Genetic Algorithm，GA) 是建立在自然选择原 理和自然遗传机制上的迭代式自适应概率性搜索方法，它能 够模拟自然界中生物进化的发展规律，对特定目标实现自动 优化(Genetic Algorithm (Genetic Algorithm, GA) is based on the principle of natural selection and natural genetic mechanisms iterative adaptive probabilistic search method, it can simulate the development law of biological evolution in nature, specific targets to achieve automatic optimization)

线性调频信号的模糊度图，模糊函数图，自相关函数，多普勒频移仿真(Ambiguity Figure chirp signal ambiguity function diagram, autocorrelation function, Doppler shift simulation)

lms算法仿真，及其主要性能分析。步长的影响与学习曲线的分析。(lms algorithm simulation, and its main performance analysis. Step of the analysis and the learning curve.)

A submarine motion simulation study was performed for the maneuvering character- istics of Draper Laboratories Unmanned Underwater Vehicle (UUV). The Revised StandardSubmarine Equations of Motion (EOM), usually used by the Navy, were augmented to incorporate the case of very high angle of attack and the propeller race-control surface interaction.