Development and Inspection of the Ortho-Calc v1.0 Program for the Calculation of the Orthometric Correction

Title & Authors
Development and Inspection of the Ortho-Calc v1.0 Program for the Calculation of the Orthometric Correction
Lee, Suk Bae; Sim, Jung Min;

Abstract
To determine the accurate height, it should be considered geometric height difference obtained by levelling as well as the physical height difference what so called orthometric correction. The orthometric correction amount is small enough to ignore at flatland but the amount is big at high mountains, so it should be considered to obtain accurate height at high mountains. But the calculation process is difficult and complex, not easy to calculate. So, to make the process easy using a user-friendly visual, a orthometric correction calculation program Ortho-Calc. v1.0 was developed in this study. This program was adopted the algorithm of Nassar and Hwang & Hsiao, and Strang Van Hees and it could be to selectivily calculate the correction amount. The inspection result exhibited high accuracy with the standard deviation of 0.024mm by the comparison of previous study. Therefore, This program Ortho-Calc. v1.0 developed in this study, will contribute orthometric correction calculation quickly and easily. And, if this program is widely popular, it could be expected to make a contribution the Benchmark's official height renewal using orthometric correction.
Keywords
Orthometric Correction;Orthometric Height;Geoid;Ortho-Calc. v1.0 Program;
Language
Korean
Cited by
1.
관측조건에 따른 GPS 타원체고 결정의 정확도 분석,이석배;어수창;

한국지형공간정보학회지, 2015. vol.23. 4, pp.67-74
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