Comparative Evaluation on the Accuracies of Differential GPS and Total Station

Abstract

Control points include both horizontal and vertical control points, and they serve as the foundation for a variety of surveying tasks such as route surveying, topographic surveying, traversing, leveling, mapping and map revisions, property boundary surveys, construction projects, and so on. This serves as the foundation for further geomatics and engineering operations focused toward development. The purpose of this research is to use dual frequency to determine the coordinates of the existing control point network along Ibrahim Shehu Shema route. Hello, target.  V90 with Differential GPS and Leica TCR 409 Total Station were used to compare the accuracies of DGPS and Total Station using statistical analysis to determine which was more accurate. The study’s objectives are to observe existing spots using DGPS and Total station, process/compute the final coordinates, and compare the findings using statistical analysis. Satellite Positioning Technology using Differential Global Positioning System (DGPS) and Total Station are the methodologies used for this project. Existing control point data were collected from the surveyor general’s office in Katsina State, and these control points were observed using both DGPS and Total Station. The data collected was then processed and examined. According to the results, DGPS observation is more accurate and requires less time. As a result, the study ended by advising that DGPS observation be used for establishing control surveys.

Keywords: Control point, differential GPS