lzw_coding

简单的MATLAB图像去噪程序 采用数学形态法进行区域选择(Simple MATLAB program using mathematical morphology image denoising method for area selection)

模糊数学方法及其应用 模糊 聚类分析 数据标准化变换(matlab fuzz )

Two dimensional FDTD with UPML + TFSF

This file discribes a structure for stabilization and tracking between two identical hyperchaotic lu systems with different initial conditions and nonlinear control input. On the basis of Lyapounov theory, a first order sliding mode controller is designed for global asymptotically stabilization and tracking, so error dynamics between hyperchaotic lu master and slave system satisfy by input nonlinear control signal. Then a second order sliding mode controller by using super-twisting algorithm is designed. In this file, results of simulation shows the rate of effectiveness from this suggested method.

支持向量回归是一种重要的预测技术，通过实现支持向量回归可以预测未来数据(support vector regression is an important prediction technique,we can predict future data by implementing support vector regression )

equalizer response for channel F(Z)=-.2Z^2+.5Z^1+1+.5Z^-1-.2Z^-2 for zfl and tap=7,9,15

提出了一种基于 JPEG/JPEG2000相结合的医学图像感兴趣区域压缩方法。该方法对在人为选定 医学图像的感兴趣区域采用无损的 JPEG2000压缩 ,而对其他图像区域则采用高压缩比的 JPEG压缩,较好地解决了医学图像的高压缩比和高质量之间的矛盾。(Based on a combination of JPEG/JPEG2000 region of interest of medical image compression method. The method of artificially selected region of interest of medical images using lossless JPEG2000 compression, and on other image regions using high compression ratio of JPEG compression, a better solution to the medical image and high-quality high-compression ratio between the contradictions.)

说明：  矢量控制是目前交流电机的先进控制方式，一般将含有矢量变换的交流电机控制都称 之为矢量控制，实际上只有建立在等效直流机模型上，并按转子磁场准确定向的控制，电机才能获得最优的动态性能。 矢量控制的基本思路是以产生相同的旋转磁动势为准则，将异步电机在静止三相坐标系上的定子交流电流通过坐标变换等效成同步旋转坐标系上的直流电流，分别加以控制，以达到直流电机的控制效果。(Vector control is an advanced control method of AC motor at present. Generally, vector control is called vector control. In fact, only based on the equivalent DC motor model and accurately oriented control according to the rotor magnetic field, can the motor obtain the optimal dynamic performance. The basic idea of vector control is to generate the same rotating magnetomotive force as the criterion. The stator AC current of asynchronous motor in the static three-phase coordinate system is converted into DC current in the synchronous rotating coordinate system by coordinate transformation, and then controlled separately to achieve the control effect of DC motor.)

说明：  该项目用于通过使用导频序列（训练序列）和信道抽头来估计OFDM中存在的信道。使用BER曲线比较系统的性能，该BER曲线是针对均匀间隔的飞行员和紧密间隔的飞行员获得的。此外，通道抽头的数量也有所不同，以估算最佳的BER曲线(This project is used to estimate the channel in OFDM by using pilot sequence (training sequence) and channel tap. The BER curve is used to compare the performance of the system, which is obtained for pilots with uniform interval and pilots with tight interval. In addition, the number of channel taps varies to estimate the best BER curve)

说明：  UUV 6自由度模型代码，仿真实例。。。。(Verification of a six-degree of freedom simulation model for REMUS autonomous underwater vehicles.)