sampledft

how to compute the roots using matlab by bisection method

说明：  Matlab code for simulation of Simulated Annuling

Performance analysis of steganography is done for selecting better wavelet for application by analyzing Peak Signal Noise Ratio(PSNR) of different wavelet families like Haar, Daubechies, Biorthogonal, Reverse Biorthogonal & Meyer wavelet(dmey) on result oriented basis using Matlab environment.

在一段文字中嵌入4bit水印，方法是基于系数类嵌入的，经过打印扫描攻击后能正确提取水印(4bit watermark embedded in a piece of text, the method is based on the coefficient of class embedded, after the print scan attack correctly extract the watermark)

MATLAB的SIMULINK子库是一个建模、分析各种物理和数学系统的软件，它用框图表示系统的各个环节，用带方向的连线表示各环节的输入输出关系。(MATLAB SIMULINK sub library is a modeling and analyzing all kinds of physical and mathematical system software, it uses the block diagram representation of all aspects of the system, with the direction of the line indicating the relationship between input and output of each link.)

交错网格声波方程正演模拟，PML吸收边界，比较适合刚刚接触的学者。交错网格有限差分地震波场计算，二维的声波正演，利用空间10阶，时间2阶。(The CalCulation of the SeismiC Wave一 fieldwith Staggered-grid Finite difference Sheme)

带有MPPT功能的光伏阵列Matlab通用仿真模型,能够较好的仿真温度，光照的影响以及达到很好的跟踪效果(PV array with MPPT function Matlab generic simulation model that can better emulate temperature, light effects and achieve good tracking performance)

ex9_1 脉冲信号调制 ex9_2 载波10MHz，带宽2MHz的线性调频信号及其频谱图 ex9_3 产生7位巴克码编码的二相码 ex9_4 产生7位巴克码和线性调频的混合调制信号 ex9_5 瑞利分布实现程序 ex9_6 瑞利分布＋杂波 ex9_7 相关对数正态分布杂波 ex9_8 相关weibull分布杂波 ex9_9 相干相关K分布杂波 ex9_10 线性调频信号的数字化正交解调 ex9_11 雷达脉冲压缩处理 ex9_12 二相编码信号的脉压处理 ex9_13 用FFT和FIR方法实现MTD处理 ex9_14 雷达的恒虚警处理（CFAR） ex9_15 比较相参积累和非相参积累(Two-phase pulse ex9_12 shrinking treatment coded signal processing using FFT and FIR ex9_13 MTD processing methods to achieve ex9_14 radar CFAR (CFAR) ex9_15 relatively coherent and non-coherent integration accumulation)

说明：  龚纯主编的“matlab语言常用算法程序集”的第九章源代码(Gong pure edited matlab language commonly used algorithm for assembly, &quot the ninth chapter of source code)

用于解反问题的共轭梯度法，对于Ax=b，输入矩阵A，列向量b，以及迭代步数k，可求的列向量x(Solution of inverse problems for the conjugate gradient method, for Ax = b, the input matrix A, the column vector b, as well as the number of iterations k, rectifiable column vector x)