GPS+Galileo+BDS-3中远程单基线RTK：基于网络的RTK的替代方案？

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-08-31 DOI:10.1017/s0373463323000243

Sermet Ogutcu, S. Alcay, B. Ozdemir, H. Duman, Ulkunur Koray, Ceren Konukseven, Nesibe Gül Bilal

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引用次数: 0

摘要

由于实时运动学(RTK)算法的发展和新兴的全球导航卫星系统(GNSS)，特别是伽利略和北斗-3，在全球范围内实现了可靠的中长基线RTK定位精度。此外，随着GNSS接收机硬件的发展，由于基于互联网的通信，消除了基于无线电通信的基线长度限制。本文利用EUREF永久GNSS网络的真实GNSS数据，在6条不同长度的基线(~50、~150、~250、~350、~450和~550 km)下，采用GPS (G)、伽利略(E)、北斗-3 (C3)和多GNSS (GE和GEC3)，结合对流层和电离层加权的部分模糊分辨率进行了单基线RTK研究。结果表明，多gnss RTK解决方案显著提高了单系统RTK解决方案的定位精度和收敛时间。结果表明，单系统RTK在高度截止角上的无时代性解更为明显，而多系统RTK在每个截止角和基线上都能提供100%的解。结果表明，对50、150、250和350 km基线长度的多gnss RTK，瞬时和少量历元单历元模糊度分辨率是可行的。基于定位结果，在10°截止角下，多gnss RTK (GEC3)与单系统GPS RTK相比，在50、150、250、350、450和550 km范围内的水平-垂直定位分别提高50%-37%、40%-35%、55%-47%、53%-54%、57%-49%和57%-49%。对于20°和30°截止角，精度的提高要高得多。在10°截止角下，与单系统GPS RTK相比，多gnss RTK (GEC3)在50、150、250、350、450和550 km范围内的收敛时间(n/e/u)分别提高了86/92/75%、77/67/72%、75/77/83%、53/56/52%、69/49/62%和52/45/39%。

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GPS + Galileo + BDS-3 medium to long-range single-baseline RTK: an alternative for network-based RTK?

Thanks to the development of the real-time kinematic (RTK) algorithm and the emerging Global Navigation Satellite System (GNSS), especially for Galileo and BeiDou-3, reliable positioning accuracy for medium and long-baseline RTK became possible globally. Moreover, with the development of the GNSS receiver hardware, baseline length limitations due to radio-based communications are removed thanks to internet-based communication. In this work, single-baseline RTK, incorporated partial ambiguity resolution with troposphere and ionosphere weighting, using GPS (G), Galileo (E), BeiDou-3 (C3) and multi-GNSS (GE and GEC3), is conducted with real GNSS data of EUREF Permanent GNSS network under three different cutoff angles (10°, 20°, and 30°) for six different lengths of baselines (~50, ~150, ~250, ~350, ~450, and ~550 km). The results show that the multi-GNSS RTK solution significantly contributed to the positioning accuracy and convergence time of the single-system RTK solutions. Based on the results, non-available epoch-wise solutions for the high-degree cutoff angles are more obvious for the single-system RTK, whereas multi-GNSS solutions provide 100% solutions for each cutoff angle and baseline. The results indicate that instantaneous and a few epochs single-epoch ambiguity resolution is feasible for 50, 150, 250 and 350 km baseline lengths for multi-GNSS RTK. Based on the positioning results, horizontal–vertical positioning improvements of multi-GNSS RTK (GEC3) compared with the single-system GPS RTK are found as 50%–37%, 40%–35%, 55%–47%, 53%–54%, 57%–49% and 57%–49% for 50, 150, 250, 350, 450 and 550 km, respectively, under a 10° cutoff angle. For 20° and 30° cutoff angles, the accuracy improvements are much higher. The convergence time improvements (n/e/u) of multi-GNSS RTK (GEC3) compared with the single-system GPS RTK are found as 86/92/75%, 77/67/72%, 75/77/83%, 53/56/52%, 69/49/62%, and 52/45/39% for 50, 150, 250, 350, 450 and 550 km, respectively, under a 10° cutoff angle.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.