Simulation And Implementation Of Marine Unmanned Platform Security Scene Based On Mixed Reality

Mixed Reality(MR),as one of the current emerging information technologies,has been playing an increasingly important role in many fields after decades of rapid development.However,there are many difficulties in acquiring,transmitting and processing information of underwater environment and target,and a series of problems need to be solved in the application technology of underwater environment and target.To this end,this thesis focuses on the Marine environment and non-cooperative target situational awareness,in view of the ocean observation of unmanned platform(hereinafter referred to as "platform")peripheral security monitoring information,the surface water environment information,and no one scene is difficult to integrate information platform to achieve the integration of the problem of dynamic display,using mixed reality technology,to build real Marine environment under the background of dynamic virtual simulation scenario unmanned platform.At the same time an unmanned platform peripheral non-cooperative target real-time monitoring information,the surface water environment information,and unmanned platform interactive integration of virtual simulation scenario,and virtual simulation exercise function,give attention to two or morethings for unmanned platform security monitoring personnel provide intuitive,economic,efficient,and security monitoring of immersion scenarios and distribution information.The main contents of this paper include:(1)Simulation model construction methods of key environmental elements in three-dimensional space scenes such as terrain,sea surface and sky in mixed realistic scenes were studied respectively.Firstly,the hierarchical detail algorithm based on the distance between viewpoints and the model complexity is used to construct the simulation model of fine terrain environment with the combination of real satellite elevation data.Secondly,based on The Geometry Clipmap grid and ITTC single parameter wave spectrum,the Gerstner waveform superposition method is adopted to realize the surface model simulation under different sea conditions.Finally,the skybox method is used to simulate and realize the sky model.(2)According to the data collected on the unmanned platform,Solidworks,3DS Max and other software are used to realize the simulation modeling of static elements such as surface targets,unmanned platform equipment and main structure of unmanned platform in the security scene.3d static element model was realized through multi-method 3D structure building,image data texture mapping and model optimization processing,and the processed model was imported into Unity3 D.(3)Study the interactive simulation technology of static elements and environmental elements in the security scene of unmanned platform,and realize the dynamic interaction between the ship and the sea based on the response model of the ship and the sea.The communication module and data storage module of security scene of unmanned platform are studied to realize real-time access and interactive update of monitoring information and scene elements of unmanned platform.(4)Based on Unity3 D,realize the function construction of hybrid reality emergency security scene simulation platform(hereinafter referred to as "simulation platform")for security scene of unmanned platform based on the security function requirements of unmanned platform,and use HTC Vive VR equipment to achieve immersive hybrid reality scene access;Realize mixed realistic warning scenarios of non-cooperative targets to facilitate users to quickly identify and warn the distribution situation of non-cooperative targets around the unmanned platform.The real-time fluctuation of sea surface model based on wave monitoring information and the production of preset model of specific sea condition scene are realized.Virtual non-cooperative objects are adopted to test the functions of the mixed reality simulation platform to ensure its authenticity and real-time performance.