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Description: Abstract We evaluate a method to achieve geographic-aware AR to have a better comprehension of (i) the effect of the calibration square size on the registration accuracy and (ii) the performance of the GeoAR components (AR device SLAM and GNNS receivers) in different environmental types. Methods We measured and compared the visualized location of virtual objects (projected points) with their target location, i.e., the objects assigned geographic coordinates locations (target points). The target and projected points were measured with high-precision measurement tools, i.e., a GNSS receiver supported by a reference station network (EPOSA\footnote{https://www.eposa.at/} in our case) and a total station Subject keywords Geographic information systems, Natural sciences, geovisualization, augmented reality, mixed-reality