Design of Terrain Dynamic Simulation and Landing View Simulation System for Small Celestial Bodies

Abstract

To solve the problem that it is difficult to carry out experimental verification for optical image navigation of small celestial body detector landing section，a small celestial body terrain dynamic simulation and landing scene simulation system was designed based on virtual reality，and the detector attitude design and landing sequence image acquisition were realized. The small celestial body model was established by using three-dimensional modeling technology，and the weighted least square method was used to realize the smooth grid of the model；linear interpolation was used to process the map，and texture mapping was realized by combining spherical mapping with cube mapping；the virtual scene simulation was developed，and the detector attitude design was realized according to the rotation matrix method. Experiments show that the simulation system can meet the demand for image navigation verification of the landing section of the probe，and can realize dynamic observation of small object topography and landing image acquisition with high graphic quality and good real-time performance，and the effectiveness of the system is verified by specific example simulation.

Keywords

small object detection / dynamic simulation / 3D modelling / texture mapping / attitude design