Strategy for Designing Geodetic Network with High Reliability and Geometrical Strength

Abstract

The main design criteria in a geodetic network are precision, reliability and strength, and economy. The proper design of geodetic networks is an integral part of the geodesist's task. The main goal of this paper is to suggest a strategy for designing a geodetic network to meet high reliability and geometrical strength criteria. In this context, a real 2D deformation monitoring scheme has been selected to evaluate its design criteria. The results indicate that the perimeter of a geodetic network is relatively weaker than the middle. This means that the perimeter observations are usually weaker than those in the middle, the maximum distortions are usually located on the edge netpoints, and the maximum robustness parameters belong to the perimeter of the network. A strategy has been recommended to counter this problem. The results also showed that the robustness parameters in rotation, shear, and scale are affected by redundancy numbers. Actually, the largest robustness parameters are due to the weak observations in the network.