GNSS完好性监测理论与方法研究

发布时间：2018-02-01 07:26

本文关键词： 完好性 GNSS RAIM 广域增强系统 SISE　出处：《长安大学》2013年硕士论文　论文类型：学位论文

【摘要】：随着GNSS技术在世界范围内的迅速发展，GNSS技术在公共运输领域特别是在生命安全相关行业中的应用日益广泛，使人们对其导航性能中完好性的要求愈加严格，以保障导航定位安全。因此，本文针对此方面开展了系列研究，主要的研究工作和成果如下：（1）系统讨论了目前GNSS完好性监测技术的理论和方法，将其分为卫星端完好性监测、地面端完好性监测和用户端完好性监测三类。重点分析了地面端和用户端的完好性监测技术，其中包括接收机端自主完好性监测、广域增强系统完好性监测及Galileo系统完好性监测技术，，并对其中算法和相关问题进行仿真和讨论。（2）论述了接收机端完好性监测模型及算法，指出GPS/GLONASS组合较GPS单系统在可用性及RAIM空洞预报方面有较大优势。研究了RAIM的基础算法，提出基于滑动开窗的RAIM算法，通过算例分析可知该算法比通常的RAIM算法无论在可用性判断上，还是故障检测与识别方面都有较大优势。最后介绍了测时完好性监测理论和方法，通过基于滑动开窗RAIM算法的测时算法与普通的测时完好性算法进行仿真对比，发现前者在各项指标上依然具有较大优势。（3）介绍了GPS广域增强系统完好性监测的主要流程，对WAAS系统完好性监测的主要参数UDRE与GIVE进行理论和算法分析。同时对相关的RURA与UIVE参数的模型与算法进行介绍分析。对上述完好性参数进行仿真分析，可知在参考站数目较少的情况下，UDRE和GIVE会出现不可用的情况，无法满足WAAS对其要求。（4）对Galileo系统完好性监测体系进行了详细介绍，并给出Galileo系统完好性监测的主要指标参数：空间信号误差SISE，空间信号误差精度SISA，空间信号监测精度SISMA。重点分析了此三种完好性参数的理论与算法，通过仿真可知，仅利用监测区域内少量的监测站，无法满足Galileo系统完好性监测的要求，但可增加监测站数目，提高完好性监测指标。
[Abstract]:With the rapid development of GNSS technology in the world, it is widely used in the field of public transportation, especially in life safety related industries. In order to ensure the safety of navigation and positioning, a series of research is carried out in this paper. The main research work and results are as follows: In this paper, the theory and method of GNSS integrity monitoring technology are systematically discussed, which can be divided into satellite side integrity monitoring. There are three types of land-based integrity monitoring and client integrity monitoring. The paper focuses on the analysis of the terrestrial and user side of the integrity monitoring technology, including the receiver side of the autonomic integrity monitoring. Wide-area enhancement system integrity monitoring and Galileo system integrity monitoring technology, and the algorithm and related issues are simulated and discussed. (2) the model and algorithm of receiver integrity monitoring are discussed. It is pointed out that GPS/GLONASS combination has more advantages than GPS single system in usability and RAIM cavity prediction. The basic algorithm of RAIM is studied. The RAIM algorithm based on sliding window opening is proposed, and the example analysis shows that the algorithm is better than the usual RAIM algorithm in usability judgment. Or fault detection and identification have a great advantage. Finally, the theory and method of timing integrity monitoring are introduced. Through the comparison of the time measurement algorithm based on sliding window RAIM algorithm and the common time measuring completion algorithm, it is found that the former still has great advantages in each index. The main process of GPS wide area enhancement system integrity monitoring is introduced. The main parameters of WAAS system integrity monitoring, UDRE and GIVE, are analyzed in theory and algorithm. At the same time, the models and algorithms of RURA and UIVE parameters are introduced and analyzed. The good parameters are simulated and analyzed. It is known that the UDRE and GIVE will not be available when the number of reference stations is small, which can not meet the requirements of WAAS. In this paper, the integrity monitoring system of Galileo system is introduced in detail, and the main index parameter of Galileo system integrity monitoring is given: spatial signal error SISE. Spatial signal error accuracy Sisa and spatial signal monitoring precision SISMA.Through analyzing the theory and algorithm of these three perfect parameters, we can know by simulation that only a few monitoring stations are used in the monitoring area. It can not meet the requirements of Galileo system integrity monitoring, but can increase the number of monitoring stations and improve the integrity monitoring index.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P228.4

【引证文献】