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说明：  关于合成孔径雷达成像原理的仿真，用matlab写的(On synthetic aperture radar imaging principle of the simulation, written with matlab)

need codes for mobile communication

说明：  基于MATLAB实现的mie散射程序，可以计算散射消光不对称因子等参数(The Mie scattering program, based on MATLAB, can calculate the parameters of scattering efficiency, extinction efficiency, asymmetry factor, and so on)

如何用ARMA模型拟合股价时间序列?我在MATLAB2007上建立了ARMA模型，分析股价时间序列，模型已经有了，但是不知道如何得到拟合输出时序。分析需要拟合输出图，作拟合误差分析。(stock price estimation)

说明：  噪声子空间法 进行波达估计 算法较复杂 不过效果明显(Noise subspace method-of-arrival estimation algorithm significantly more complex, however the effect of)

huffman encoding for image compression

小球的抛物线轨迹。将轨迹分解成x坐标和y坐标，计算出每一个时刻的x和y值，然后对x和y进行成像就可以得到轨迹了(Parabolic trajectory of the ball. The track is decomposed into x and y coordinates, x and y values calculated each time, then x and y can be imaged on a trajectory)

GNSS 的CA和 BOC码的多径情况，以及图形，功能可以，希望大家有用(ca boc multipath)

说明：  对400幅灰度图像用分块PCA的方法进行压缩，进行通信时只用传输主元和特征向量。其中，pcaxiefangcha.m用于图像压缩，imresume.m用于图像恢复和部分图像的显示，chaweight.m用于绘制特征值比重-主元个数关系图，crdraw.m用于绘制压缩比-主元个数关系图，psnrdraw.m用于绘制总误差PSNR-主元个数关系图，psnrlocation.m用于绘制单幅图像误差PSNR分布图。(On the 400 block with a gray image compression method of PCA, to communicate only the main elements and characteristics of transfer vectors. Which, pcaxiefangcha.m for image compression, imresume.m parts of the image for image restoration and display, chaweight.m characteristic value for the draw weight- the main element number diagram, crdraw.m used to draw the compression ratio- the primary element number diagram, psnrdraw.m used to draw the total number of errors PSNR-principal component diagram, psnrlocation.m PSNR used to draw a single image error distribution.)

基于window 环境下的电话本程序 (Window environment based on phone book program)