北斗接收机捕获跟踪算法的设计与实现
发布时间：2018-07-31 05:03
【摘要】：随着卫星导航在国防、民航管理、农业、智能交通、科技渔业以及高铁监控等方面的广泛应用，世界各国也越来越重视卫星导航技术的研究与发展。我国的北斗导航定位系统在设计之初就肩负着促进国家信息化建设和经济发展方式转型的重要使命，满足我们国家国防，经济和社会发展的战略需求。系统在建设过程中也始终按照“坚持效益目标、坚持自主创新、坚持质量至上、坚持科学决策”的原则。根据“三步走”规划，在2012年底，中国“北斗二代”区域导航系统已经宣告建成，服务范围已经可以覆盖整个中国以及大部分亚洲国家。整个系统预计会在2020年左右宣告建成，到时候将具备向全球大部分国家提供导航定位服务的能力。 本文基于北斗导航接收机研制项目，主要研究接收机的捕获与跟踪过程。首先，比较了全球四大全球定位系统的建设现状以及各自的优缺点，并重点对我国北斗卫星导航定位系统做了介绍。其次，介绍了卫星导航的理论基础、扩频通信的基本原理、锁相环原理以及导航定位原理，，并在MATLAB仿真环境产生了捕获用的本地伪码和载波信号。最后，重点研究了接收机中基带信号处理的方法，介绍了常用的捕获算法和跟踪环路的设计方法，通过分析比较，确定了捕获算法采用改进的滑动相关法，跟踪环路设计采用二阶FLL辅助三阶PLL，通过在MATLAB仿真环境下对该设计方案进行验证，实验结果表明本文捕获算法与跟踪算法设计的有效性。
[Abstract]:With the extensive application of satellite navigation in the fields of national defense, civil aviation management, agriculture, intelligent transportation, science and technology fisheries and high speed rail monitoring, the research and development of satellite navigation technology have been paid more and more attention all over the world. The Beidou navigation and positioning system in our country is at the beginning of the design of the national information construction and the transformation of economic development mode. The important mission is to meet the strategic needs of our national defense, economic and social development. In the process of construction, the system has always been in accordance with the principle of "adhering to the goal of efficiency, insisting on independent innovation, insisting on quality first, insisting on scientific decision-making". According to the "three steps" plan, China's "Beidou two generation" regional navigation system has already been established by the end of 2012. The whole system is expected to be completed around 2020 and will have the ability to provide navigation and positioning services to most countries around the world, as the service covers the whole of China and most of the Asian countries.
Based on the development project of the Beidou navigation receiver, this paper mainly studies the acquisition and tracking process of the receiver. Firstly, it compares the construction status of the four global positioning systems in the world and their advantages and disadvantages, and focuses on the introduction of the Beidou satellite navigation and positioning system in China. Secondly, it introduces the theoretical basis of the satellite navigation, and the spread spectrum communication. The basic principle, the principle of phase-locked loop and the principle of navigation and positioning, and the acquisition of local pseudo code and carrier signal in the MATLAB simulation environment. Finally, the method of the baseband signal processing in the receiver is studied, and the common acquisition algorithm and the design method of the tracking loop are introduced. Through the analysis and comparison, the acquisition algorithm is determined to be modified. In the sliding correlation method, the design of the tracking loop is designed by two order FLL auxiliary three order PLL, and the design scheme is verified by the MATLAB simulation environment. The experimental results show the validity of the design of the algorithm and the tracking algorithm.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN965.5
本文编号：2154491
[Abstract]:With the extensive application of satellite navigation in the fields of national defense, civil aviation management, agriculture, intelligent transportation, science and technology fisheries and high speed rail monitoring, the research and development of satellite navigation technology have been paid more and more attention all over the world. The Beidou navigation and positioning system in our country is at the beginning of the design of the national information construction and the transformation of economic development mode. The important mission is to meet the strategic needs of our national defense, economic and social development. In the process of construction, the system has always been in accordance with the principle of "adhering to the goal of efficiency, insisting on independent innovation, insisting on quality first, insisting on scientific decision-making". According to the "three steps" plan, China's "Beidou two generation" regional navigation system has already been established by the end of 2012. The whole system is expected to be completed around 2020 and will have the ability to provide navigation and positioning services to most countries around the world, as the service covers the whole of China and most of the Asian countries.
Based on the development project of the Beidou navigation receiver, this paper mainly studies the acquisition and tracking process of the receiver. Firstly, it compares the construction status of the four global positioning systems in the world and their advantages and disadvantages, and focuses on the introduction of the Beidou satellite navigation and positioning system in China. Secondly, it introduces the theoretical basis of the satellite navigation, and the spread spectrum communication. The basic principle, the principle of phase-locked loop and the principle of navigation and positioning, and the acquisition of local pseudo code and carrier signal in the MATLAB simulation environment. Finally, the method of the baseband signal processing in the receiver is studied, and the common acquisition algorithm and the design method of the tracking loop are introduced. Through the analysis and comparison, the acquisition algorithm is determined to be modified. In the sliding correlation method, the design of the tracking loop is designed by two order FLL auxiliary three order PLL, and the design scheme is verified by the MATLAB simulation environment. The experimental results show the validity of the design of the algorithm and the tracking algorithm.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN965.5
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相关期刊论文 前2条
1 杨灵;赵笙罡;胡修林;;DSSS滑动相关捕获算法改进及性能分析[J];电讯技术;2007年01期
2 周平,薛敏彪,胡永红,陈铭;扩频数字接收机匹配滤波器的设计与实现[J];微电子学与计算机;2004年09期
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