计算机应用

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无人机多跳自组网实时视频传输性能评估

刘思伟 赵玉亭 慕德俊   

  1. 西北工业大学自动化学院控制与网络研究所 西北工业大学自动化学院控制与网络研究所
  • 收稿日期:2007-04-02 修回日期:1900-01-01 发布日期:2007-10-01 出版日期:2007-10-01

Performance evaluation of real-time video transport over UAV multi-hop Ad Hoc networks

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  • Received:2007-04-02 Revised:1900-01-01 Online:2007-10-01 Published:2007-10-01

摘要: 基于当前无人机广泛采用的M-JPEG与MPEG-2视频编解码器,构建了实时半实物仿真环境,并基于此对无人机多跳自组网实时视频传输进行了性能评估。结果表明,实时条件下的M-JPEG编解码器无法支持多跳实时视频传输,而MPEG-2能够支持2跳至3跳的实时视频传输;在1~10跳的实时传输条件下,MPEG-2较之M-JPEG在分组投送成功率和解码率意义下的视频质量平均分别提高了55.69%和205.64%。相对于传统的单飞单控方式,无人机多跳自组网在将无人机系统的作用范围扩大4~9倍的同时能够支持实时视频传输。

关键词: 无人机, 自组网, 实时, 视频

Abstract: The performance of real-time video transport over Unmanned Aviation Vehicle (UAV) multi-hop Ad Hoc networks (UMAN) was evaluated on a novel hardware in the loop simulation platform. The test video was encoded in the Motion JPEG or the MPEG-2 format with the frame rate of 25fps. Tests show that the MPEG-2 codec can provide real-time video service within 3 hops, while the Motion JPEG codec cannot support multi-hop real-time video transport. The packet delivery ratio (PDR) and the decoded block ratio (DBR) got with the MPEG-2 codec has an average increase of 55.688% and 205.643%, compared with the results got with the Motion JPEG codec, respectively. The UMAN can extend the operational range of the UAV system to 4~9 times of the range offered by one UAV with the capability of supporting real-time video transport at the same time.

Key words: Unmanned Aviation Vehicle (UAV), Ad Hoc networks, real-time, Video