무등산 기준점 정확도 해석에 관한 연구

Abstract

To ensure the accuracy of measurement and increase efficiency, the survey control points is the point measuring the certain point depending on the criteria of measurement and indicating of the coordinates. At the time of measurement, it is used as a basis and is used as the basis for satellite measurement.

To check the consistent relationship among the current triangulation points at the Mountain Mu Deung, by the 4th triangulation point, this study has readjusted the surveying network through the performance analysis. Therefore, this study aims to improve the precision for the utilization of accuracy analysis of ground control points.

Results of this study are as follows.

1. Even though the vertical limit of errors of indirect leveling which is using GPS has not been stated in work regulations, the vertical limit of errors of underground facilities and aerial survey is using H=0.100m. This study has applied H=0.050m which is commonly used for 50% of errors. 2. Though the horizontal results of 4th triangulation point except for DokSan 453 and GwangJu 434 have appeared to be good, The vertical results except for DokSan 453 have exceeded limit of errors.

3. Unlike the ground that buried the integrated control point or order mark in the neighborhood of Mountain Mu Deung, there was a significant difference in height, Using the indirect leveling method is more efficient than using direct leveling method in order to calculate the height, but the vertical results of shortest fixed 4th triangulation points have exceeded limit of errors.

4. By connecting the shortest fixed points of integrated control points U0941, U0944, U0947 and U0950 and the vertical results of triangulation point DokSan 453, this method has turned out to be the most desirable way for taking advantage of GPS observation.