Digital lake three-dimensional visualized simulation method and simulation platform based on OSG

The invention provides a digital lake three-dimensional visualized simulation method and simulation platform based on an OSG. The digital lake three-dimensional visualized simulation method includes the following steps that a three-dimensional digital terrain model, a ground feature model and an earth surface derivative model of the region where a lake is located are built; the ground feature model and the earth surface derivative model are loaded to the corresponding geographical positions of the three-dimensional digital terrain model to obtain a three-dimensional digital terrain and geographical environment scene; based on the three-dimensional digital terrain and geographical environment scene, an OSD module is used as a bottom layer three-dimensional rendering engine for scene rendering; meanwhile, an OsgOcean module is utilized to further simulate a simulation rendering water current and weather effect to obtain a three-dimensional digital lake terrain environment scene; a water current scene and a weat