COMPARATIVE ANALYSIS OF DGPS ORTHOMETRIC HEIGHT AND CLASSICAL METHOD OF HEIGHT DETERMINATION

This study presents a comparative analysis of Differential Global Positioning System (DGPS) orthometric height and the classical method of height determination. Accurate height determination is essential in surveying, engineering, and construction projects. Traditionally, classical leveling methods such as spirit leveling have been widely used due to their high precision. However, the advent of DGPS technology has introduced faster and more efficient techniques for determining elevations. This study evaluates the accuracy, efficiency, cost, and reliability of DGPS-derived orthometric heights compared to those obtained through classical leveling methods. Data were collected from field observations using both techniques and analyzed using statistical methods. Findings indicate that while classical leveling provides higher accuracy over short distances, DGPS offers significant advantages in terms of speed, coverage, and ease of use over large areas. The study concludes that DGPS is a viable alternative for height determination in many applications, though classical methods remain indispensable for high-precision tasks. Recommendations include the integration of both methods to achieve optimal results in surveying operations.