Existing methods for visualizing global-scale terrains are basically derived from the chunked LOD method. With such methods

GPU-CPU data transfer bottlenecks still emerge in real-time walkthroughs. Moreover

the addition of skirts to fix cracks requires additional resources and may not even eliminate artifacts completely.To address these issues

we proposed a GPU terrain visualization method that combines the GPU tessellation algorithm. The view-dependent and screen space error-controlled LOD method

and local coordinate system rendering algorithms. This method significantly improved the efficiency of global terrain visualization. A global terrain visualization system was implemented to provide global multi-resolution satellite images and achieve high-resolution terrain field data rendering. Extensive experiments were performed to analyze the system benchmark. Compared with the traditional GPU-based chunked LOD method

the proposed method can improve FPS by more than 100%

thus eliminating the system bottleneck problem. The proposed method is practicable

robust

and widely applicable in large-scale global rendering systems.