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软件无线电中的信号抽取程序，包括抽取后的频谱分析(software radio signal extraction procedures, including spectral analysis after extraction)

An Antenna is a transducer, which converts electrical power into electromagnetic waves and vice versa.

说明：  该方法自适应地将一个复杂的非平稳的多分量信号分解为若干个瞬时频率具有物理意义的乘积函数（Product function,简称PF）之和，其中每一个PF分量由一个包络信号和一个纯调频信号直接求出。包络信号就是该PF分量的瞬时幅值，而PF分量的瞬时频率则可以由纯调频信号直接求出，进一步将所有PF分量的瞬时幅值和瞬时频率组合，便可以得到原始信号的完整的时频分布。(This method adaptively decomposes a complex non-stationary multi-component signal into the sum of several product functions (PF) with physical meanings at instantaneous frequencies, where each PF component consists of an envelope signal and a pure The FM signal is directly obtained. The envelope signal is the instantaneous amplitude of the PF component, and the instantaneous frequency of the PF component can be directly obtained from the pure frequency modulation signal. Further, the instantaneous amplitude of all PF components and the instantaneous frequency are combined to obtain the complete original signal. Time-frequency distribution.)

一篇介绍ARMA时间序列模型定阶方法的文章，供大家参考。(a paper about order determination method for ARMA time series model .)

test grids for matlab users

这是一个matlab程序，用互信息法求混沌重构时延的主程序(This is a matlab program, the main delay for chaotic reconstruction method using mutual information)

主要是关于彩色图像边界提取的源代码。里面包含有待处理的图片以及所有的源代码，即M文件。(Mainly on the color image edge extraction of the source code. Which contains the picture to be addressed, as well as all the source code, that is, M documents.)

汉明码编码译码源码，谢谢大家分享，~~~~(Hamming code encoding decoding source code, thank you for sharing)

产生PRN32颗卫星的CAcode，并求自相关(Geneter CA codes of PRN32 satellites)

laplacian边缘检 图象进行降噪处理 高斯滤波处理(laplacian edge detection image processing Gaussian filter processing for noise reduction)