signal-process

天文导航方向，导航信号转化为星历表信息Matlab程序。(The direction of celestial navigation, navigation signal into Matlab ephemeris information procedures.)

说明：  边缘检测程序，Matlab源码，利用常用的几个边缘检测算子实现图像的边缘检测~(Procedures for edge detection, Matlab code, the use of several commonly used edge detection operator of the edge detection image ~)

包含三种跳频序列编码的实现，实现了性能改进，很经典的。(contains three hopping sequence coding to achieve and realize the performance improvements, very classic.)

介绍了数字通信中的QPSK调制解调的原理，通过用Matlab编写脚本程序对QPSK通信系统的发射和接收过程的具体实现进行模拟仿真，绘出信号在理想信道和加噪信道中模拟传输时的时域图，并对各模块进行了频谱分析，所得到的结果与 理论基本相符，对于理解QPSK系统的性能并在系统的实际应用上作进一步的设计，提供了有效的参考依据。 (The introduction was done with the principle of the QPSK modulation and demodulation in digital communications，a script was written by using Matlab program to CalTy out a simulation of the QPSK communication system．which contains the concrete realization of transmit and receive process．The time-domain diagram is drew separately when the signal transmits in the ideal channel and in the channel with noise，spectral analysis of each module is also done，the results obtained with theoretical results in the main，which provides an effective frame of reference for understanding the performance of QPSK systems，and the practical application in the system to make further designed．)

特征向量 主要在MATLAB下实现.用于图像的PCA之前的准备工作，最后实现图像的主观检索。(Eigenvector mainly in MATLAB to achieve. The PCA for image preparation work before, and finally realize the subjective image retrieval.)

说明：  关于gauusian函数的matlab代码，角点提取时会用到(About gauusian function matlab code that will be used corner detection)

该程序可以实现基于TOA估计的异步UWB定位。其中包括卡尔曼滤波、LSE估计、采用高斯函数作为冲激脉冲等(The program can achieve asynchronous UWB TOA estimation based positioning. Including Kalman filtering, LSE estimation using Gaussian function as impulse, etc.)

说明：  本程序为利用matlab求解微分方程的源程序及相关例子(the procedures for the use of Matlab to solve the differential equation of the source and relevant examples)

对于一幅彩色图像来说，可以对于三个通道进行分别梯度，然后选取最大值组成一幅梯度图像(color gradient matlab)

本文件为常见聚类算法测试数据集 ，UCI上常用的聚类算法数据集(This document is a common clustering algorithm test data set.)