空中导航中EGNOS+SDCM定位精度分析

Q2 Engineering
M. Mrozik, J. Kozuba, K. Krasuski, J. Ćwiklak, M. Bakuła, A. Ciećko, G. Grunwald, D. Wierzbicki
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引用次数: 0

摘要

本文提出了一种利用EGNOS和SDCM两个支持系统确定SBAS(卫星增强系统)定位精度参数的改进方案。该方案基于加权平均模型,该模型结合了EGNOS和SDCM位置的单一解,以计算飞行器的定位精度。该应用算法已于2020年在波兰东北部进行的飞行实验中进行了测试。对钻石DA 20-C1飞机在EPOD机场(欧洲波兰Olsztyn-Dajdki)着陆的进近阶段进行了数值分析。Sepentrio AsterRx2i测地线接收器安装在飞机上,用于收集和记录GPS(全球定位系统)观测结果,以计算飞机的导航位置。此外,“*.ems”格式的EGNOS和SDCM校正是从实时服务器数据下载的。计算在RTKLIB v.2.4.3软件的RTKPOST库中实现,也在Scilab应用程序中实现。根据所进行的研究,发现在椭球坐标BLh下,EGNOS+SDCM解决方案的飞机定位精度范围为-1.63m至+3.35m。此外,加权平均模型中椭球高度h的确定精度比算术平均模型高1÷28%。另一方面,加权平均模型中椭球高度h的测定精度比单一EGNOS溶液高1÷28%。此外,与算术平均模型相比,加权平均模型将位置RMS-3D的合成误差降低了1÷13%。本研究中使用的数学模型在航空导航SBAS定位精度分析中被证明是有效的
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis of the accuracy of EGNOS+SDCM positioning in aerial navigation
The article presents a modified scheme of determining the accuracy parameter of SBAS (Satellite Based Augmentation System) positioning with use of two supporting systems: EGNOS (European Geostationary Navigation Overlay Service) and SDCM (System of Differential Correction and Monitoring). The proposed scheme is based on the weighted mean model, which combines single solutions of EGNOS and SDCM positions in order to calculate the accuracy of position-ing of the aerial vehicle. The applied algorithm has been tested in a flight experiment conducted in 2020 in north-eastern Poland. The phase of approach to landing of a Diamond DA 20-C1 aircraft at the EPOD airport (European Poland Olsztyn Dajtki) was subjected to numerical analysis. The Septentrio AsterRx2i geodesic receiver was installed on board of the aircraft to collect and record GPS (Global Positioning System) observations to calculate the naviga-tion position of the aircraft. In addition, the EGNOS and SDCM corrections in the “*.ems” format were downloaded from the real time server data. The computations were realized in RTKPOST library of the RTKLIB v.2.4.3 software and also in Scilab application. Based on the conducted research, it was found that the accuracy of aircraft positioning from the EGNOS+SDCM solution ranged from -1.63 m to +3.35 m for the ellipsoidal coordinates BLh. Additionally, the accuracy of determination of the ellipsoidal height h was 1÷28% higher in the weighted mean model than in the arith-metic mean model. On the other hand, the accuracy of determination of the ellipsoidal height h was 1÷28% higher in the weighted mean model than for the single EGNOS solution. Additionally, the weighted mean model reduced the resultant error of the position RMS-3D by 1÷13% in comparison to the arithmetic mean model. The mathematical model used in this study proved to be effective in the analysis of the accuracy of SBAS positioning in aerial navigation
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来源期刊
Archives of Transport
Archives of Transport Engineering-Automotive Engineering
CiteScore
2.50
自引率
0.00%
发文量
26
审稿时长
24 weeks
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