战场电磁环境态势具有复杂、多维、时变特性，研究战场电磁态势实时可视化技术，对于作战指挥员了解战场态势，作出科学指挥、决策意义重大。目前，表征战场电磁态势的数学模型并不完善，以场强为例，建立了多辐射源空间场强合成的数学模型，为电磁态势三维体数据场的构建提供数据来源；战场态势的复杂性，使得与体数据场相关的数学模型也相对复杂，传统基于中央处理器（CPU）的实现方法无法达到实时解算的要求，鉴于此，提出了基于通用计算图形处理器（GPGPU）的体数据场加速生成技术，实验结果表明该技术能够满足实时可视化的需求；设计了一种体绘制传递函数，并利用基于图形处理器（GPU）的光线投射算法，实现了电磁态势实时可视化。
Abstract
The battlefield electromagnetic situation has the characteristics of complexity, multidimensions and time-varying. Real-time visualization of battlefield electromagnetic situation is significant for commanders to make scientific decisions. Currently, the battlefield electromagnetic data models are not perfect. A mathematic model of the field strength of multiple radiation resources is established by taking the field strength for example, which is used to provide the data sources for constructing 3D volume data field of the battlefield electromagnetic situation. The traditional central processing unit (CPU)-based algorithm cannot meet the requirement of real-time solution because of the complexity of mathematical models related to the volume data field. A volume data field accelerated generation technique based on general purpose graphics processing unit (GPGPU) is proposed. The experimental results show that the proposed technique can meet the requirement of real-time visualization compared to the traditional algorithm. A transfer function is designed to accomplish the visualization of electromagnetic situation based on GPU ray-casting algorithm.
关键词
兵器科学与技术 /
电磁态势 /
数据场建模 /
通用计算图形处理器 /
光线投射算法 /
体可视化
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Key words
ordnance science and technology /
electromagnetic situation /
data field modeling /
general purpose graphics processing unit /
ray-casting algorithm /
volume visualization
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基金
国家自然科学基金项目（61571368）； 国防技术基础科研项目(2014年）
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