Research And Application Of Asteroid Collision Detection Based On Virtual Reality

Asteroid collision detection technology is one of the hot topics in the field of deep space exploration.Its basic task is to detect whether two objects are in contact or colliding.Real-time and accurate collision detection of asteroids is important for promoting research in the field of deep space exploration.Although there are a large number of valuable researches on collision detection both at home and abroad,due to the complicated and changeable external environment and high experimental difficulty coefficient in deep space exploration activities,the problem of asteroid collision detection needs to be further studied.With the continuous development of deep space exploration,the problems faced by asteroid collision detection technology have become increasingly prominent.The most critical issue is how to effectively improve the speed and accuracy of collision detection.Accurate asteroid collision detection not only requires rapid and effective collision detection,but also requires a high degree of authenticity in the simulation environment.Virtual reality technology is a simulation technology based on computer graphics.It has been successfully applied in many fields and has achieved remarkable results.Virtual reality technology provides a new,low-cost and rapid means to solve the above problems.It can create and experience a virtual real world,simulate the difficult deep space exploration process,and enhance the authenticity of the simulation environment.In this paper,based on the background of the process of the detector landing asteroid,the collision detection in the process of the landing motion of the detector is studied in depth,which mainly includes the following aspects:Analyzing the general bounding box algorithm,because the collision detection algorithm has no universal algorithm,the mixed hierarchy bounding box algorithm is improved according to the physical signs,rigid bodies and non-convex properties of the research object,and a new layered structure is designed.The upper layer uses the root node as the top layer to construct a double layer,the outer layer uses the external Sphere bounding box and the internal OBB bounding box for processing.The lower layer uses the OBB bounding box for processing.In the collision detection algorithm,the efficient traversal operation is beneficial to the overall detection efficiency.When the mixed hierarchical bounding box is constructed,an improved dynamic splitting method is adopted,which is constructed from the top down,and at the same time,the research object is divided equally so as to facilitate the subsequent traversal of the update operation.For the continuous-time collision detection of research objects,the space-time correlation theory is used to narrow the detection range,and the formula for improving the time interval in the back-off method is given.The collision time is precisely located and is suitable for the continuous collision detection process of this paper.For the collision detection simulation,this paper uses Solidworks three-dimensional software to model the research object,and combines the virtual reality toolbox of Matlab to add the virtual world scene node and rendering effect.According to the asteroid detection process,orbit dynamics and attitude dynamics simulation in the process of motion,it involves an improved collision detection process and gives the results of the collision detection operation.Finally,through the analysis of the results of the collision detection,the improved algorithm is more accurate and efficient than the general bounding box algorithm and meets the real-time requirements of rigid body motion in virtual reality.