L波段数字航空通信系统技术发展现状与挑战

doi:10.7527/S1000-6893.2023.29161

Abstract

Abstract:

The L-band Digital Aeronautical Communications System （LDACS） is a broadband， high speed and secure communication technique. It is an essential component of the air-to-ground communication system in the framework of the Future Communication Infrastructure （FCI）， and is the first integrated Communication， Navigation and Surveillance （CNS） authenticate by the International Civil Aviation Organization （ICAO）. This study analyzes the development requirements for the aviation air-to-ground communication system. The status of the LDACS， including the presentation of the technique the ICAO standardization and the typical application scenarios are provided. Description of the key LDACS techniques is followed， which consist of the implement of broadband communication within limited spectrum resources， compatibility with the L-band open-sky signals， integration of navigation and communication， mobility management and multi-link access technology based on Aeronautical Telecommunication Network using Internet Protocol Suite （ATN/IPS）， and the secure transmission of data. The status and challenges of the LDACS development in China is also provided.

Key words: aviation broadband communication, LDACS, integrated navigation and communication, compatibility, ATM modernization

CLC Number:

V243

Yanbo ZHU, Zhipeng WANG, Kai GUO, Zhiqiang DAN. L-band digital aeronautical communications system development status and challenges[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(10): 29161-029161.

Figures/Tables 8

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地空数据链类型	数据链路	运行年份	工作频段/MHz	最大传输速率/Kbps	接入方式	调制方式
ACARS	VHF POA	1978	117.975~137	2.4	CSMA	AM/MSK
	Inmarsat Classic Aero	1991	上行： 1 525.0~1 559.0 下行： 1 626.5~1 660.5	10.5	TDM/TDMA	A-BPSK， A-QPSK
	HFDL	1998	2.85~22	1.8	TDMA	2/4/8PSK
	VDL M2 AOA	2001	117.975~137	31.5	CSMA	D8PSK
	Iridium SBD	2003	1 616~1 626.5	1.2	TDMA/FDMA	QPSK
	Inmarsat SB-S	2007	上行： 1 525.0~1 559.0 下行： 1 626.5~1 660.5	432	TDM/TDMA	A-BPSK， A-QPSK
VHF数据链	VDL M2	2001	117.975~137	31.5	CSMA	D8PSK
VHF数据链	A-VDL M2		117.975~137	94.5	TDMA或CSMA	APSK，QAM
宽带数据链	LDACS		前向： 1 110~1 156 反向： 964~1 010	2 600	前向：OFDMA 反向：OFDMA-TDMA	自适应QPSK，16QAM，64-QAM

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L-band digital aeronautical communications system development status and challenges

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