The Visualization Of Radar Detection Range Base On Ray Casting Algorithm

Visualization in scientific computing is more and more frequently used in 3D visualization of radar detection range,and it is the main technique to realize 3D visualization of radar detection range.Ray casting volume rendering algorithm is proposed in the earliest time and it provides the highest quality of visualizations.But it also has the shortcoming in calculatingthe maximum amount.The radar detection range three-dimensional volume data is so large that traditional ray casting algorithm is difficult to meet the requirements of real-time interaction.This article discusses how to accelerate ray casting algorithm with the hardware and software methods and processes in radar detection range visualization.The main work is as follows:1.Researching on the three-dimensional volume rendering algorithm.It focuses on volume rendering of data sources and types,algorithms,processes,etc.Then analyze the advantages and disadvantages.among the four classic volume rendering algorithms,ray casting,Splatting,Texture Mapping,cell Projection.Finally,comparing results of ray-casting algorthm produce in the highest fancy quality.2.Drawing radar detection range is slow,can not reach the issue of demand for real-time rendering ray casting algorithm.This paper presents a CUDA-based ray-casting algorithm acceleration using CUDA parallel hardware architecture,CPU and GPU work together to realize the function executed in parallel.Processing program executed in the CPU serial terminal,perform complex parallel rays sample calculation processing on the GPU side.Use the bounding box technology and light jumping algorithm can reduce the number of projected light and sampling points.Finally,the accelerated algorithm implementation process,experimental results show that the algorithm is accelerated without compromising image quality,but also improves the rendering speed can reach close to real-time rendering.3.Modeling radar detection range.The related knowledge of radar is introduced,and the range of radar detection range in free space is realized from the horizontal direction and elevation direction.Then,according to the occlusion of the terrain,firstly,the method of obtaining the height of the terrain is introduced.Then,the method of obtaining the discrete data of the radar detection range of the terrain covered by the terrain is presented.4.Application of the radar detection range module in virtual battlefield simulation system.In this system,we use OSG to organize the virtual environment scene graph spatial structure.In carrying out the integration,according to the principle of shots,first use a way of a single pixel integration.Then,use the OSG RTT technology to access virtual scene dynamic texture,and use double texture fusion technique to merge two scenes.