| 摘要: |
| 甚高频(VHF)数据链在当今航空通信中具有十分重要的作用。目前航空数据链各异,并各具优势。文中主要论述VDL4,首先介绍了其基本设备结构,说明了协议的层次模型,然后分析了VDL4的时隙选择、网络接入、信道管理等关键技术,最后将它和其余VDL模式数据链进行了比较,从而说明VDL4是一种能满足新航行系统需求、极具竞争力的航空数据链。 |
| 关键词: 航空数据链,VDL4,时隙选择,网络接入,信道管理 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:July 04, 2003 |
| 基金项目: |
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| VDL4:a New Aviation VHF Data Link |
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| Abstract: |
| VHF data link plays a very important role in aviation communication today. At present, there are many kinds of aviation data link protocols,each of which has some advantages. In this paper, the protocol of VDL Mode 4 Data Link is first discussed. And then, the key technologies such as methods of network access,slot selection and channel management are explained.Finally,it is compared with other aviation data links and the advantages of VDL 4 Data Link are illustrated. This shows VDL4 can meet the FANS' needs,and it is an aviation data link with rivalrousness. |
| Key words: Aviation data link,VDL Mode 4,Slot selection,Network access,Channel management |
