星基ADS-B系统空天链路的建模与仿真  

Modeling and simulation of aircraft-satellite link in satellite-based ADS-B system

作　　者：李冬霞[1] 宁嘉伟 刘海涛[1] LI Dongxia;NING Jiawei;LIU Haitao(Tianjin Key Lab for Advanced Signal Processing,CAUC,Tianjin 300300,China)

机构地区：[1]中国民航大学天津市智能信号与图像处理重点实验室,天津300300

出　　处：《中国民航大学学报》2024年第4期37-42,63,共7页Journal of Civil Aviation University of China

基　　金：国家重点研发计划项目(2016YFB0502402)。

摘　　要：星基广播式自动相关监视(ADS-B,automatic dependent surveillance-broadcast)系统是一种新型的航空器监视技术,在未来空中交通管理系统中具有广阔的应用前景。为了深入研究星基ADS-B系统中航空器到卫星的空天链路通信性能,将专业软件Matlab和STK(system tool kit)有效联合,构建符合国际标准的星基ADS-B空天链路完整模型;通过离散事件动态交互模拟ADS-B消息的发送与接收全过程,最后统计得出体现星基ADS-B空天链路通信性能的消息识别概率(POI,possibility of identify)、消息检测概率(POD,possibility of detective)、信号接收功率、信号冲突概率、卫星覆盖范围等指标。仿真结果表明,随着区域内航空器数量上升,POI、POD下降,消息冲突概率上升。Satellite-based automatic dependent surveillance broadcast(ADS-B)system is a new type of aviation surveillance technology,with an extensive application prospect in the future air traffic management system.In order to explore the communication performance of aircraft-satellite link in satellite-based ADS-B system profoundly,a complete aircraft-satellite link model of satellite-based ADS-B according with the international standards is built by effectively combined professional software Matlab and STK(system tool kit).The entire process of transmitting and receiving ADS-B messages are simulated through discrete event dynamic interaction.Finally,the indicators that can reflect the communication performance of aircraft-satellite link in satellite-based ADS-B system such as possibility of identify(POI),possibility of detective(POD),signal received power,possibility of signal collision and the coverage of satellite are obtained through statistics.The simulation results show that with the number of aircraft in the area increases,POI and POD decrease,and the possibility of message collision increases.

关 键 词：星基ADS-B 空天链路 MATLAB STK 联合仿真 

分 类 号：V355.1[航空宇航科学与技术—人机与环境工程]