基于三维纹理的雷达探测概率直接体可视化

针对面绘制技术表现雷达探测效能不充分的缺陷,提出了基于三维纹理的雷达探测概率直接体绘制可视化算法。针对雷达探测数据分布不均匀、重要性不一致等特点,提出了颜色传递函数的设计准则,以此基础设计了传递函数表达式。通过高级传播模型计算三维雷达探测信息,并使用传递函数将其映射成不同的光学成像参数。建立了计算视觉效果最差情况的角度模型,通过实验方式验证了使用3个备选切片方案代替实时计算采样多边形方法的可行性。仿真结果表明:与面绘制方法比较,文中算法不仅能直观地表现雷达探测范围的整体信息,而且还能清晰地展示雷达探测三维数据场的内部细节。

Directive Volume Rendering of Radar Detection Probability Based on 3D Texture

Aimed at the defect that radar detection performance can''t be fully displayed by using surface rendering, an algorithm of radar detection probability visualization using directive volume rendering technique based on 3D texture is proposed. According to the characteristics of radar detection data such as uneven distribution and inconsistent significance, design principles of the transfer function is given, and then the analytical formula is presented based on the principles. 3D radar volumetric data is calculated based on the advanced propagation model, and the probability is classified by assigning optical imaging parameters through color transfer function. The angle on the condition of the worst visual effect is computed through mathematic model, and experiments have validated that method that replaces real-time slicing calculation by prepared three schemes is feasible. Simulation results show that, compared with the surface rendering, the display of radar detection whole coverage by new version is clear and the internal data can be easily exhibited by cutaway view.