支持四维航迹运行的新一代民机数据链技术综述

支持四维航迹运行是未来民用航空运输技术发展的主要趋势之一，四维航迹运行对数据链应用、数据链协议栈以及数据链链路传输技术提出了新的要求。在研究国外四维航迹运行新技术基础上，分析了支持四维航迹运行的管制员-飞行员数据链通信、合约式自动相关监视等数据链应用新特点，介绍了支持四维航迹运行的未来数据链协议栈——基于互联网协议的航空电信网工作原理，分析了支持四维航迹运行的宽带卫星通信链路、L频段数字航空通信系统的链路特性。

Overview of new generation civil aviation datalink technology supporting 4D trajectory based operation

Supporting the four-dimensional(4D) trajectory based operation is one of the main trends in the development of civil aviation transportation technology in the future.The 4D trajectory based operation puts forward new requirements for the datalink application,datalink protocol stack and datalink transmission technology.On the basis of studying the foreign new technology of 4D trajectory based operation,the new characteristics of datalink applications such as Controller Pilot Data Link Communications(CPDLC) application and Automatic Dependent Surveillance Contract(ADS-C) application which support the 4D trajectory based operation are analyzed.And the working principle of Aeronautical Telecommunication Network/Internet Protocol Suite(ATN/IPS) protocol stack which supports the 4D trajectory based operation in the future is introduced.The characteristics of candidate communication links which support the 4D trajectory based operation such as broadband satellite communication and L-band Digital Aeronautical Communication System(LDACS) are also analyzed.