bank2

matlab实现的对卫星运行轨道的模拟，压缩包中包括文档和程序 (matlab implementation of the satellite orbit simulation, compression package includes documentation and procedures)

Simulation of basic circuit eletric

扩展有限元XFEM，结构断裂分析的扩展有限元法(EXTENDED FINITE ELEMENT METHOD for Fracture Analysis of Structures)

线性预测分析是现代语音信号处理中最核心的技术之一，为现代语音信号处理的飞速发展立下了赫赫功劳，在语音分析、合成、编码、识别等方面都有着广泛的应用，至今仍是最有效的语音分析技术之一。(Linear prediction analysis is the most modern speech signal processing one of the core technology for the modern rapid development of voice signal processing and established illustrious contribution of the speech analysis, synthesis, coding, recognition and so on are widely used, still is the most effective voice analysis technologies.)

说明：  假设每个延时单元延时10ms.被传输的基带信号x(t)是一个0，1交替变换的矩形二进制脉冲序列，脉宽为10ms，并假设x(t)通过一个稳定的散射信道后才到达均衡器，成为2径信号，这两路信号幅度相等 ，相隔15ms。用MATLAB实现一个2级LMS均衡器(equalizer)

MATLAB implementation of BPSK modulation

A 1D Finite Element Solver: main code

递推的最小二乘辨识程序，系统辨识中应用，用MATLAB实现，毕竟实用(Recursive least squares identification procedure, the application of system identification using MATLAB realize, after all, practical)

寻找测试样本的最近邻，可以有效的用于用于模式识别，信号处理(This is a small but efficient tool to perform K-nearest neighbor search, which has wide Science and Engineering applications, such as pattern recognition, data mining and signal processing. The code was initially implemented through vectorization. After discussions with John D Errico, I realized that my algorithm will suffer numerical accurancy problem for data with large values. Then, after trying several approaches, I found simple loops with JIT acceleration is the most efficient solution. Now, the performance of the code is comparable with kd-tree even the latter is coded in a mex file. The code is very simple, hence is also suitable for beginner to learn knn search.)

用pocklington方程矩量法计算半波对称阵子天线的电流分布(Pocklington equation method of moments to calculate the half-wave symmetric time around the antenna current distribution)