지적도근점측량 정확도 향상을 위한 도선망 구성 개선방법 도출

Abstract

This study present a method decreasing the complexity of calculation and the error accumulation in intermediate point of graphical traversing for traverse networks, an improvement of graphical traversing, to acquire better accuracy by analyzing the correlation between the associated traverse lines and removing errors based on the result of analysis. To examine the accuracy of topographic control surveys caused by the in analysis methods between graphical traversing and graphical traversing for traverse network. We compared two different results of topographic control surveys with those from VRS-RTK surveys. The T/S surveys were conducted by two different methods: graphical traversing and graphical traversing for traverse network. The maximum connection error for the north section of the study area using graphical traversing for traverse network were 0.16 m and 0.07 m, respectively. And those errors from graphical traversing were 0.17 m and 0.07 m. To improve measurement accuracies of the topographic control point surveying by T/S, GPS-static surveys had been conducted at intermediate points and we set up new traverse lines with the control points which are intermediate points, and compared the result with the result from VRS-RTK surveys. As a result, the average of connection error was 0.02 m and the maximum of connection error was 0.06 m. Moreover the maximum of connection error value from the improved measurement was better than graphical traversing for traverse network by 0.10 m and graphical traversing by 0.11 m. From the results, the topographics control surveying will become more efficient and practical with increased accuracy by using the graphical traversing with the intermediate points selected from known points.