允许用户输入桁架结构，程序自动计算出。

Reciprocating compressor vibration signal spectrum analysis and fault diagnosis往复式压缩机振动信号频谱分析与故障诊断.pdf

deal.m用于处理SR-3000相机存储的.mat格式读取的图像(used to deal with the image of SR-3000)

水声通信面临的最困难的问题是多途干扰,其中自多途引起接收信号的幅度衰落,互多途引起接收信号的码间干扰,再加上海洋环境的高噪声背景、低的载波频率、极为有限的带宽以及传输条件的时间—空间—频率变化特性,使得通信过程十分困难。此外，水声通信试验的成本高，难度大，也为水声通信研究带来挑战。 本软件对水声信道的仿真研究很有帮助，可以产生声线图，冲激响应，声速图等仿真文件，结合Matlab画图工具绘制图像，对水声信道的模拟仿真很有帮助。(The most difficult problem faced by underwater acoustic communication is multi-path interference, which since multipath fading caused by the magnitude of the received signal, and mutual inter-symbol interference caused by multipath signal reception, plus the marine environment of high background noise, low carrier frequency , very limited bandwidth and transmission conditions of time- space- frequency characteristic such that the communication process is very difficult. In addition, the high cost of underwater acoustic communication experiment, difficult, and challenges for the study of underwater acoustic communication. This software is useful for simulation study of underwater acoustic channel can produce sound chart, impulse response, sound velocity diagrams simulation files, combined with Matlab drawing tools to draw the image of underwater acoustic channel simulation helpful.)

文件是用于MATLAB编程中常用的数据插值和拟合的代码。(File is the code for data interpolation and fitting commonly used in MATLAB programming.)

说明：  matlab编写的斜齿轮刚度计算程序，其原理基于微分思想的势能法。(The calculation program of helical gear stiffness written by Matlab is based on the potential energy method of differential thought.)

GPSCA码的产生，以及同频单音干扰的生成，并在自适应天线中生成权矢量，调试已经通过，可以直接使用，程序是M文件，内容简单易懂，在做GPS方面研究的初学者很有必要看一下，认真挑选过的代码，你值得拥有！

source code for coordinate transformation

This toolbox has functions to perform nonlinear diffusion images. This kind of image filtering is particularly useful for reducing noise and to simplify images for further segmentation. Much of these functions are based on Perona and Malick s work, and also on J. Weickert s papers. The fast AOS diffusion is implemented. There is also 3D diffusion functions, color image diffusion and Coherence-Enhancing diffusion (This toolbox has functions to perform nonl inear diffusion images. This kind of image fi ltering is particularly useful for reducing no ise and to simplify images for further segmenta tion. Much of these functions are based on Peron a and Malick's work, and also on J. Weickert's papers. The hypothetical fast AOS fusion is implemented. There is also 3D diffusi on functions, color image diffusion and Coherence- enhancin g diffusion)

BP神经网络对2ask,2fsk,4fsk,2psk,4psk,gmsk六种信号的学习和训练。 (BP neural network 2ask, 2fsk, 4fsk, 2psk, 4psk. gmsk six signals in the learning and training.)

盲均衡smulink+matlab 简单的仿真程序和模型，希望会对大家有所帮助~(Blind Equalization smulink+ Matlab simple simulation program and model, I hope everyone will help ~)