iGMAS监测接收机数据质量分析方法及软件设计

发布时间：2018-01-14 09:06

本文关键词：iGMAS监测接收机数据质量分析方法及软件设计　出处：《中国科学院研究生院（国家授时中心）》2014年硕士论文　论文类型：学位论文

【摘要】：随着北斗导航系统的日益发展，iGMAS应运而生。iGMAS译为国际全球连续监测评估服务，，其服务功能与IGS（international GNSS Service，国际GNSS服务）相同，旨在为全球用户提供导航数据与精密产品。主要区别在于IGS仅提供GPS、GLONASS系统的数据与产品，而iGMAS可提供四系统（GPS、GLONASS、BDS、Galileo）的数据。北斗ICD文档的发布，带动了iGMAS芯片以及接收机的研发。而iGMAS接收机能否提供正常的定位服务，取决于其数据质量。基于以上战略需求，本文承担了几款iGMAS接收机比测的任务，即对实测iGMAS数据进行质量分析，定位解算，判断其是否能满足基本的服务。本文主要针对以下两点做了研究：（1）数据质量分析数据质量分析包括数据完好性、多路径、周跳。本文研究了周跳探测、多路径计算的方法。对实测的GPS、GLONASS数据使用TEQC软件进行了质量分析，BDS数据使用笔者改进后的BNC软件进行质量分析。（2）定位解算定位解算包括非差精密单点定位与双差相对定位。本文研究了这两种定位的方法，并对实测数据进行了解算，从内符合精度与外符合精度两方面对结果进行了评估。定位软件使用Bernese5.0。本文的主要贡献：对开源软件BNC进行了改进，使其可以识别BDS、正确读取BDS数据和广播星历，可计算三频数据，可计算每颗星的多路径值，可计算GEO卫星位置，最终分析BDS的数据质量。
[Abstract]:With the increasing development of the Beidou navigation system, iGMAS.IGMAS came into being for the international global continuous monitoring and assessment services, the service function and IGS (International GNSS Service, international GNSS service), in order to provide navigation data and precision products for users worldwide. The main difference is that IGS only provides GPS data and products of GLONASS system, and the iGMAS can provide four systems (GPS, GLONASS, BDS, Galileo) data.
The release of the Beidou ICD document has led to the development of the iGMAS chip and the receiver, and whether the iGMAS receiver can provide a normal positioning service depends on the quality of its data.
Based on the above strategic requirements, this paper has undertaken several tasks of iGMAS receiver, which are quality analysis of measured iGMAS data, location and calculation to determine whether it can meet the basic services.
(1) data quality analysis
The quality of data analysis including data integrity, multi path, cycle slip. This paper studies the cycle slip detection method, multi path calculation. The measured GPS, GLONASS data quality analysis using TEQC software, BNC software BDS data using the improved quality analysis.
(2) location calculation
The location solution includes non differential precise point positioning and double difference relative location. In this paper, the two positioning methods are studied, and the measured data are calculated. The results are evaluated from the two sides of the internal coincidence accuracy and the external coincidence accuracy. The location software is Bernese5.0..
The main contributions of this article are:
The open source software BNC is improved, which can identify the BDS, read BDS data and broadcast ephemeris, calculate the triple frequency data can be calculated, multiple paths of each star, can GEO satellite position calculation, the final analysis of the data quality of BDS.

【学位授予单位】：中国科学院研究生院（国家授时中心）
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN96.1

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