ENGINEERING JOURNAL CHIANG MAI UNIVERSITY

Volume 27, No. 02, Month AUGUST, Year 2020, Pages 78 - 90

The study of effects on positioning accuracy using real time kinematic satellite survey in mae moh open-pit coal mine

Thanatepol Boonprakob and Puttipol Dumrongchai

Abstract Download PDF

The satellite survey using Real-time kinematic (RTK) positioning method may have some errors occurred due to the effects of the climate changes overtime and baseline lengths between GNSS (Global Navigation Satellite System) base station and rover. This study aims to investigate the effects. The test points were established around Mae Moh mine’s pit, Lampang province. The test points were separated into 2 groups, increment horizontal and vertical distances. The RTK and GNSS surveyings were operated in rainy season, winter, and summer. The measured values were compared with the standard values acquired by static positioning method. The results revealed that the root-mean-square errors were 2.3 cm and 3.1 cm for horizontal and vertical coordinates, respectively. The results showed the distance between the two stations affected the accuracy of coordinates. In addition, the air humidity and temperature were obstacle for receiving GNSS signals.

Keywords

GNSS positioning, RTK, Mae Moh lignite coal mine, Baseline length, Position error

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