COMPARATIVE ASSESSMENT OF TROPOSPHERIC MODELS ON BASELINE PRECISION IN A LOCAL GPS NETWORK (8-11)

DOI: 10.31618/ESU.2413-9335.2019.1.62.87

Дата публикации статьи в журнале: 2019/06/24

Название журнала: Евразийский Союз Ученых — публикация научных статей в ежемесячном научном журнале, Выпуск: 62, Том: 1, Страницы в выпуске: 8-11

Автор: Bazarzagd Lkhagvasuren
Department of Land Management, Mongolian University of Life Sciences, Ulaanbaatar

Автор: Munkh-Ireedui Khasbazar
Department of Land Management, Mongolian University of Life Sciences, Ulaanbaatar

Автор: Zorigtbaatar Amarsaikhan
Department of Geodesy, Agency for Land Administration and Management, Geodesy and Cartography, Ulaanbaatar

Анотация: Satellite based positioning systems are widely used for various applications. There are several error sources that causes the estimated position and time measurements from satellite based positioning systems’ receivers such as GPS and GNSS to be inaccurate. The one of the significant error sources is tropospheric delay. The troposphere is the lowest layer of the atmosphere near the earth that causes the largest error source of pseudo-lite signal as it propagates through the lower troposphere, and the thickness of it is 9-16 km. The GPS signal path through troposphere depends on temperature, pressure, height, latitude, and humidity (Gurtner, et al. 1989). It is necessarily to correct the signal delay caused by the troposphere. This paper reveals the importance of the tropospheric delay modeling for precise baseline parameter estimation by assessment of tropospheric delay models, and mapping function used to model the tropospheric delay in Mongolia at different elevation angles (0°, 5°, 10°, 15°, and 20°). The paper also discusses the advantages and limitations of these models. Trimble Geomatic Office (TGO) software is used to analyze the data in the current study.

Ключевые слова: tropospheric delay models, baseline precision,mapping function,GPS,error ,

Данные для цитирования: Bazarzagd Lkhagvasuren Munkh-Ireedui Khasbazar Zorigtbaatar Amarsaikhan. COMPARATIVE ASSESSMENT OF TROPOSPHERIC MODELS ON BASELINE PRECISION IN A LOCAL GPS NETWORK (8-11) // Евразийский Союз Ученых — публикация научных статей в ежемесячном научном журнале. Технические науки. 2019/06/24; 62(1):8-11. 10.31618/ESU.2413-9335.2019.1.62.87

Скачать в формате PDF

Список литературы: 1. B.Hofmann-Wellenhof, H.Lichtenegger, J.Collins, GPS theory and practice, 5th edition, New York, pp.106-115, 2009 2. Rizos.M, Businger.ST, GPS Meteorology: Mapping zenith wet delays onto precipitable water, Journal of Applied Meteorology, Vol.33, pp.379-386, 1997 3. Celestino.C.C, Sousa.C.T, Yamaguti.W, Kuga.H.W, Evaluation of Tropospheric and Ionospheric effects on the Geographic localization of data collection platforms, Hindawi Publishing, Vol.2007, No.32514, pp.1155-1166, 2007 4. Shrestha.S, Prapod.C, Impact of different tropospheric models on GPS baseline accuracy: Case study in Thailand, Journal of Global Positioning Systems, Vol.4, No.1, pp.36-40, 2003 5. Chang.C.C, Neal.C.L, Testing on tropospheric modeling for GPS tracking stations in Taiwan, Bulletin Geodesique, Vol.64, pp.127-159, ROC, 2008 6. Kleijer.K, Improvements in GPS tropospheric delay estimation with numerical weather prediction, PhD thesis, University of New Brunswick, Canada, 2004 7. Davis.J.L, Herring.T.A, Shapiro.I.I, Effects of atmospheric modeling errors on estimates of baseline length, Radio Science, Vol.20, pp.1593-1607, 1985