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Öğe Evaluation of RTK-GPS and Total Station for applications in land surveying(Indian Acad Sciences, 2011) Kizil, U.; Tisor, L.Accuracies of Real-Time Kinematic Global Positioning (RTK-GPS) system and Total Station (TS) were investigated in GIS environment. In geostatistical evaluations, Kriging method was used with spherical, exponential, and Gaussian models. The survey results demonstrated that an area of 3.5 ha or smaller can be best explained with Gaussian model, while the larger areas require a spherical model. A vertical error of 60 cm and a horizontal error of 30 cm can be observed when the survey points outside the construction area are eliminated. The optimum area per survey point was calculated to be 20x20 m(2) to increase the accuracy. This case study showed that an inaccurate survey can result cost over estimations up to 27%.
