A-SMGCS系统动态工作方法  

A Dynamic Operation Method of A-SMGCS

作　　者：凌明[1] 张军[1] 罗喜伶[1] 

机构地区：[1]北京航空航天大学新航行系统民航重点实验室,北京100083

出　　处：《计算机仿真》2007年第8期57-60,共4页Computer Simulation

基　　金：航空科学基金(02F51070;03F15002)

摘　　要：为了解决A-SMGCS指令工作方法健壮性不足的问题,提出了一种新的基于动态调整时隙结构的A-SMGCS动态工作方法,通过采用将时隙划分为多种时隙块,并对各种时隙块进行动态调整,以及允许移动站自主工作的方法以提高系统的可扩展性和健壮性。对动态调整时隙结构进行了描述,设计了基于该时隙结构的A-SMGCS动态工作方法,对比研究了上述两种工作方法下A-SMGCS系统的监视容量、监视报文间隔,以及系统健壮性,并使用网络仿真工具OPNET进行了仿真验证。仿真结果表明,A-SMGCS动态工作方法在保留指令工作方法时隙利用率高、监视系统容量大、监视报文间隔稳定的优点的同时,极大的改善了系统健壮性。To solve the problem of robustness of directed operation method of A - SMGCS based on VDL - M4, a dynamic operation method based on dynamic slot structure is presented. Through dividing a second into kinds of slot blocks, changing the position and portion of each slot block as needed and allowing the mobiles to work autonomously, the dynamic operation method can improve the flexibility and robustness of A - SMGCS. The dynamic slot structure and the dynamic operation method are described and an analysis is done to compare the system capacity, ADS - B message update period and robustness performances of these two operation methods. A simulation using OPENT is done later. The results show that the A - SMGCS system based on dynamic operation method not only has the same good performances as directed operation method in aspects of slots usage efficiency, ADS - B message update period and system capacity, but it also notably enhances the robustness of A - SMGCS.

关 键 词：机场场面监视 甚高频数据链模式4 时隙结构 广播式自动相关监视 健壮性 

分 类 号：V271.4[航空宇航科学与技术—飞行器设计]