在空中交通管制中,利用监视设备提供的航空器飞行动态,管制员就可以为航空器配备飞行间隔,防止航空器与航空器相撞.监视设备存在的误差会对飞行间隔产生较大的影响.对比二次雷达系统,基于ADS-B的侧向间隔研究是当前的重点.文中通过分析监视系统信号处理流程,得出ADS-B监视误差主要有GPS接收机误差、数据链误差和系统延时误差组成,并阐述了各部分对于侧向间隔的影响.
In air traffic control,controller make use of surveillance device to manage flight separation and avoid aircraft crash.Error of surveillance system must directly impact flight separation.Comparing with Secondary Surveillance Radar,study of lateral separation standard based on ADS-B is important problem.So this paper analyses signal process flow based on Petri net of ADS-B and discusses the impact of error of GPS receiver,communication dada links and system delay on lateral separation.