通航飞机避碰区域防撞模型的等效性研究  

Equivalence study on collision avoidance zone based models for general aviation aircraft collision avoidance

作　　者：彭良福[1] 颜悦[1] 石佳奇[1] 陈亦鲜[1] 

机构地区：[1]西南民族大学电气信息工程学院

出　　处：《中国安全科学学报》2016年第8期95-99,共5页China Safety Science Journal

基　　金：国家自然科学基金资助(61374190);西南民族大学中央高校专项资金项目(2015NZYQN50)

摘　　要：为克服现有TCASⅡ只能提供垂直方向防撞措施的局限性,有必要建立通航飞机的多维机动防撞模型。基于低空空域通航飞机飞行防撞的特点,采用以包围体形成最小安全保护区的方法,分别建立以球体和圆柱体为包围体的通航飞机防撞模型。通过将包围体模型投影到水平和垂直方向上,再把水平和垂直2个方向的结果进行逻辑"与"运算,使复杂的三维防撞问题简化为2个二维防撞问题。采用3D游戏与计算机图形学中关于相交性检测的方法,对通航飞机的分别以本机和侵入机为参考中心的2个防撞模型进行分析和比较。结果表明,分别以本机和侵入机为参考中心建立的2个基于避碰区域(CAZ)的通航飞机防撞模型是完全等效的。It was held by the authors that for the sake of overcoming the limitation with the existing TCASⅡ which can only provide vertical maneuver, a multi-dimensional collision avoidance model of general aviation aircraft should be built. According to the characteristics of general aviation aircraft in low altitude airspace, and using the method of forming minimum safety protect zone, the collision avoidance model was designed based on bounding volume of sphere and cylinder. A complex movement problem of a 3D body is simplified to a simple 2D one, by projecting the model of bounding volume to horizontal plane and vertical plane, and using the Boolean AND operator. Theoretical analysis were made for both the model with our own aircraft as the reference center and the model with instrusive aircraft as the reference center, by using a method of intersection test in 3D game and computer graphics. The results prove equivalence between the two models.

关 键 词：通航飞机 机载防撞系统(TCASⅡ) 包围体 避碰区域(CAZ) 相交性检测 

分 类 号：X928.02[环境科学与工程—安全科学]