Constructing topological models for three-dimensional and dynamic cadastral management systems based on generalized maps

The unified management of land space occupied by natural resources requires three-dimensional (3D) and dynamic cadastral management systems (CMSs). The topological model is one of the most important parts of CMS data. In 3D and dynamic CMSs, topological models should be constructed for 0D–4D multidimensional cadastral objects. The existing method of constructing topological models involving 4D cadastral objects is only at the conceptual level. In this study, we propose a method to construct topological models of multidimensional cadastral objects that support both spatial and spatiotemporal objects. This method represents cadastral objects as generalized maps, which represent topological relationships independent of cadastral objects of specific dimensions. Therefore, this method can construct multidimensional cadastral objects using unified logic. In this method, 2D cadastral data footprints are converted into generalized maps, which support the unified management of 2D, 3D, and 4D cadaster data. We used five data sets of different sizes to test the method. The results demonstrate that this method can construct topological models for 3D and dynamic CMSs efficiently.