一种基于L-DACS1系统上行链路帧同步方法

摘要

One deployment option for future civil air-ground broadband communication named L-band Digital Aeronautical Communications System 1 is proposed by International Civil Aviation Organization and earlier drafted by German Aerospace Research Center. Interference originating from other radio navigation equipments operating in adjacent channels in L-band has a strong impact on the synchronization of the receiver. This paper presents a novel method which can realize forward link frame synchronization accurately and expeditiously in consecutive transmission in aeronautical high mobile environment even with intense impact from Distance Measure Equipment(DME).%针对未来民航空地宽带通信系统，国际民航组织（ICAO ）推荐了一种由德国宇航局研究中心起草的运作于 L 波段的航空数字通信系统1(L-DACS1)方案。但是，当前运行于该波段的无线电导航设备会对L-DACS1系统产生剧烈干扰，对同步系统的影响尤为显著。文章提出了一种新颖的针对该系统上行链路的帧同步方法，在测距仪强烈干扰的航空高速移动环境下能实现准确、快速、高效的帧同步。