Simulated-Annealing

To calculation the BER of Qpsk overAWGN ang Rayleigh Fading channel

能够实现合成孔径雷达的反向投影成像算法，距离向实现脉冲压缩，方位向实现相干叠加。(It can realize the backprojection imaging algorithm of synthetic aperture radar, realize pulse compression in range direction, and realize coherent superposition in azimuth.)

在正方形区域内产生均匀分布的随机拓扑,红色信标节点 . 黑色未知节点,初始化节点间距离,跳数矩阵,最短路径算法计算节点间跳数,球每个信标节点的校正值,最小二乘法求未知点坐标(Generate uniformly distributed random topology in the square area, red beacon nodes. Black unknown nodes, the distance between node initialization, hop count matrix, the shortest path algorithm for computing nodes hops, a correction value of a ball each beacon node, the least square method for the coordinates of unknown points )

Many synthetic aperture radar (SAR) image formation algorithms require the computation of a multidimensional Fourier transform of irregularly-sampled or unequally-spaced data samples. We apply a recently developed algorithm, the unequally-spaced FFT (USFFT),2 to SAR image formation and compare its accuracy and complexity to a conventional algorithm. We find that the USFFT algorithm allows comparable accuracy to traditional approaches at a slightly reduced computational cost. We briefly discuss extensions of the USFFT algorithm to multiresolution SAR imaging

beamforming in antenna

说明：  基本的能实现目的 图像处理得到很好的应用(To achieve the basic purpose of the application of image processing is well)

Rotation Invariance using Fourier Mellin transform

该文件包含了MATLAB关于随机信号分析的一部分常用函数，已经一些重要的仿真实例，对随机信号的分析处理比较的实用(The document contains some useful functions which Analysis Random Signal，and some important Simulation examples，and i think it is Practical。)

平坦衰落信道的MATLAB仿真（有多普勒频移） (Flat fading channels MATLAB simulation (with Doppler shift))

一维波动方程计算的程序，有限差分法,很有用的程序(Program of one-dimensional wave equation, finite difference method fdtd)