基于并行码有哪些信誉好的足球投注网站的GPS信号捕获.docx

摘　要：全球定位系统从开始运行到现在，与人们的生活越来越紧密，现在已经被运用到各个领域。GPS接收机作为人们使用全球定位系统的接口，与人们的关系最为密切，同时也是研究的重点。GPS接收机的工作顺序为信号有哪些信誉好的足球投注网站捕获、信号跟踪继而导航解算，GPS接收机的信号有哪些信誉好的足球投注网站捕获是GPS接收机进行信号处理的基础。本文对GPS信号的结构和特点进行了介绍，完成了在Matlab环境下的PRN的产生和分析，对接收机的组成和工作原理进行了概括。目前在GPS信号捕获上一般使用三种算法：串行有哪些信誉好的足球投注网站捕获、并行频域有哪些信誉好的足球投注网站捕获和并行码有哪些信誉好的足球投注网站捕获。本文对这几种算法进行了详细介绍，并且详细讨论了捕获过程中几个参数的选择。并行码有哪些信誉好的足球投注网站捕获算法在软件接收机中有着独特的优势，在算法仿真时采用实际的中频数据，在Matlab环境下实现了并行码有哪些信誉好的足球投注网站捕获算法的仿真，给出了相应的仿真结果。结果显示成功捕获到了8颗卫星，验证了该算法的高效性。最后对整个研究工作进行了总结，提出了以后的研究方向。本文虽然只是对GPS信号捕获的研究，但是其原理和伽利略及北斗卫星信号捕获接近，因此对其它导航系统的发展也具有积极的推动作用。关键词：GPS接收机；中频信号；伪随机码；并行码有哪些信誉好的足球投注网站；捕获摘要Abstract：Global Position System is more and more close with people’s life from start run till now.It has already been applied to various fields.As the user interface of global positioning system,GPS receiver has the most closely related to the people,and is the focus of research in the meantime.The work order of GPS receiver is signal search and acquisition,signal tracking andthen navigation solution.GPS signal search and acquisition is the foundation for signal processing of GPS receiver.This thesis describes the structure and characteristics of the GPS signals, implements thegeneration and analysis of PRN in Matlab environment,summarizes the constitute and working principle of the receiver.There are three algorithms generally usedon the GPS signal acquisition use:serial search acquisition,parallel frequency space search acquisition,parallel code phase search acquisition.All these different kinds of algorithms and the choice of several parameters in the acquisition process are described in detail.Parallel code phase search acquisition has its unique advantages in a software receiver. Matlabs simulation of this algorithm is made with a real IF data.Then this thesis gives thecorresponding simulation results.The results shows that it captures eight satellites,verify the efficiency of the algorithm.Finally,it summarizes the whole work of this thesis and proposes the direction of future research. This thesis studies on the GPS receiver,whose principles are similar to G