shanchen

读入任意大小的图像，实现长和宽上的比例缩放,matlab 图像预处理处理中有用的小程序(imread a image and resize the size of the image)

this is file for traffic networks benchmarks...

参考文献《外辐射源定位跟踪技术的研究》(两步加权最小二乘法)以及 《a simple and efficient estimator for hyperbolic location》对Chan算法进行仿真；认定基站数目为5个； (The Chan algorithm in the TDOA location based on the CDMA cell network)

3点法计算数值微分，你可以试试看，3dianfa jisuan shuzhiweifen (calculate the numerical differentiation using the three point method)

用于SVM实现不同算法对不同数据集性能测试的MATLAB代码，包括离线，在线算法。(SVM implement different algorithms for different data sets to performance testing MATLAB code, including offline and online algorithms.)

EKF-SLAM Simulator This version of the simulator uses global variables for all large objects, such as the state covariance matrix. While bad programming practice, it is a necessary evil for MatLab efficiency, as MatLab has no facility to avoid gratuitous memory allocation and copying when passing (and modifying) variables between functions. With this concession, effort has been made to keep the code as clean and modular as possible.

串的一些基本运算，删除一段子串，置换，求s串中从start位置开始长度为len的子串等等(Some of the basic string operations, delete a substring, replacement, seeking s string starting from the start position of the sub-string of length len, etc.)

matlab的等温线绘制。利用插值等 知识实现绘制给定数据的等温线绘制(matlab temperature line)

About UWB A co-basis is a special orthonormal basis, of the Hilbert function space, whose base functions are shape-invariant to Fourier transform except for phase shifts known a priori. A notable advantage of the co-basis orthonormal-expansion method lies in that it essentially conceals the difference between time- and frequency-domains expansions, such that expanding the UWB spectra (frequency domain) is almost equivalent to expanding the pulse shapes (time domain), making the designing task significantly simple. This paper highlights this advantages through tutorial examples on the design of UWB pulses with DAA functionality that meets Korea spectrum regulations.(About UWB)

这是一个完整的描述软件无线电的MATLAB编程，非常适用用仿真，初学者可以(This a complete description of the MATLAB software radio programming, is very suitable for use simulation, beginners can s)