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http://dx.doi.org/10.7848/ksgpc.2022.40.4.333

Field Tests for Accuracy of GNSS-RTK Surveys by ISO 17123-8 Standard  

Lee, Hungkyu (Dept. of Civil Engineering, Changwon National University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.40, no.4, 2022 , pp. 333-342 More about this Journal
Abstract
This paper has theoretically and practically reviewed the ISO (International Standard Organization) 17123-8 standard not only to raise the appropriateness for introducing performance criteria of GNSS (Global Navigation Satellite Systems) surveying equipment based on RTK (Real-Time Kinematic) accuracy but also to derive its proper test procedure by introducing the international standard. Field experiments have been performed to appreciate the GNSS-RTK accuracy of five selected receivers via the full testing procedure of the ISO standard, which statistically compares the so-called experimental standard deviations with themselves and with the reference accuracy. A series of statistical tests have revealed that the RTK accuracy of the same class receivers is not identical, whereas that of the different classes can be equivalent. Such a result evidences the urgency of adopting an RTK accuracy-based specification of the GNSS equipment to the performance standard, currently referenced to the static observation technique only. It is believed that this transition helps the maximization of a new generation of cost-effective receivers to legal surveying applications. Finally, this study proposes the ISO full test, comparing an experimental standard deviation with its referenced value, for a potential field verification procedure of the new performance standard.
Keywords
Global Navigation Satellite System; Real-Time Kinematic Positioning; Accuracy; Field Tests; Statistical Test; ISO 17123-8;
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1 Cozzens, T. (2017), Surveying and mapping RTK survey systems using smartphone, GPS World, https://www.gpsworld.com/launchpad-new-rtk-system-for-surveyors/ (last date accessed: 18 July 2022).
2 Heister, H. (2008), The new ISO standard 17123-8 for checking GNSS field measuring system, Proceedings of FIG Working Week 2008, 14-19 June, Stockholm, Sweden, unpaginated CD-ROM.
3 Seo, W., Lee, H., Lee, K., and Lee, H.J. (2009), A study on field validation tests for survey-grade GPS receivers, Journal Of the Korean Society of Cadaster, Vol. 25, No. 2, pp. 33-45. (in Korean with English Abstract) https://doi.org/10.22988/ksc.2009.25.2.003   DOI
4 ISO (2007), Optics and Optical Instruments - Field Procedure for Testing Geodetic Surveying Instruments - Part 8: GPS Field Measurement Systems in Real Time (RTK), International Standard Organization.
5 NGII (2021), A study on establishment of unified control points for South and North Korean SOC projects and transition of height system to global standard, National Geographical Information Institute, Suwon, Korea, 263p.
6 Cozzens, T. (2021), U-blox upgrades GNSS receivers for faster cm accuracy, GPS World, https://www.gpsworld.com/u-blox-upgrades-gnss-receivers-for-faster-cm-accuracy/ (last date accessed: 18 July 2022).
7 Lee, Y.J., Jo, J.R., Ryu, S.H., and Jung, R.J. (2008), Testing in GNSS RTK of ISO standard 17123-8, Proceedings of the Korean Association of Geographic Information Studies Conference, 10th October, Goyang, Korea, pp. 352-353.
8 ISO (2015), Optics and Optical Instruments - Field Procedure for Testing Geodetic Surveying Instruments - Part 8: GPS Field Measurement Systems in Real Time (RTK), International Standard Organization.