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http://dx.doi.org/10.7319/kogsis.2015.23.4.067

Accuracy Analysis of GPS Ellipsoidal Height Determination in Accordance with the Surveying Conditions  

Lee, Suk Bae (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Auh, Su Chang (Department of Civil Engineering, Gyeongnam National University of Science and Technology)
Publication Information
Journal of Korean Society for Geospatial Information Science / v.23, no.4, 2015 , pp. 67-74 More about this Journal
Abstract
GNSS/Leveling technology makes it possible to get geoidal height geometrically using GNSS and Leveling technology. GNSS/Geoid technology refers to a technology for obtaining orthometric height by subtracting geoidal height achieved by Geoid technology from ellipsoidal height achieved by GNSS technology. The purpose of this study is to verify the accuracy of the ellipsoidal height determination in order to verify the accuracy of the orthometric height determination by the GNSS/Geoid technology. For the study, a test bed was selected in Kyungnam province and GNSS Static surveying was accomplished in the test bed and then the GNSS data was processed in accordance with various analysis conditions. So, it was verified the accuracy of the ellipsoidal heights determination in accordance with the surveying conditions under the GNSS Static surveying. According to the research results, to ensure the 3cm goal accuracy of the ellipsoidal height determination, it should be surveyed by four fixed points on the survey area periphery and more than two hours of the GNSS occupation time, And also, it was found that should be limited to a baseline distance of 20km under the GNSS Static surveying.
Keywords
GNSS/Leveling Technology; GNSS/Geoid Technology; GNSS Static Surveying; Ellipsoidal Height Determination;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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