电讯技术2017，Vol.57Issue(10)：1114-1121,8.DOI:10.3969/j.issn.1001-893x.2017.10.003
一种新的通用航空机载防撞逻辑设计方法
A New Approach to Design Airborne Collision Avoidance Logic for General Aviation
摘要
Abstract
Since the traffic alert and collision avoidance system (TCAS) was designed for large aircraft that can achieve greater vertical rates,the assumptions made by the system and the associated resolution adviso-ries were not always appropriate for general aviation aircraft. In view of the collision avoidance system for general aviation,an approach based on the Markov decision process ( MDP) to design the collision avoidance logic is proposed. Firstly,the dynamics of the aircraft involved in the encounter is discretized into a discrete transition function,and then the collision avoidance system is modeled with MDP based on the end-state util-ity function of its outcomes,the iterating equation for the optimal collision avoidance logic is derived by using dynamic programming. Finally,the design process of the optimal collision avoidance logic for general aviation is presented,and also the optimized logics are evaluated in computer simulation. The simulation results show that the collision avoidance logic can meet the current safety level while lowering the alert rate by adjusting the utility ratio parameters. In the circumstance that a significant fraction of encounters ( about 18%) has a vertical miss distance of less than 30 m,the collision probability is approximately 2. 88 ×10-4 providing that the alert probability is greater than 0. 85. The method has certain reference value for research on the collision avoidance system in low altitude airspace general aviation aircraft in China.关键词
通用航空/低空空域/机载防撞系统/马尔可夫决策过程/最优防撞逻辑Key words
general aviation/low altitude airspace/traffic alert collision avoidance system( TCAS)/Markov decision process( MDP)/optimal collision avoidance logic分类
航空航天引用本文复制引用
林云松,彭良福,傅勇,叶睿..一种新的通用航空机载防撞逻辑设计方法[J].电讯技术,2017,57(10):1114-1121,8.基金项目
国家自然科学基金资助项目(61374190) （61374190）
