| 星载AIS收发机的关键技术初探 |
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| 引用本文： | 郝盛,陈涤非.星载AIS收发机的关键技术初探[J].航空电子技术,2007,38(4):7-11. |
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| 作者姓名： | 郝盛 陈涤非 |
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| 作者单位： | 上海埃威航空电子有限公司,上海,200233 |
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| 摘 要： | 研究了现有的VHF频段的船用自动识别系统在超小或微型卫星应用中的若干关键技术。阐述了大气层、降雨、多径失真、多普勒频移对星载AIS通信的影响,接收到的星载AIS信号的载噪比以及星上天线的设计等。研究结果表明,多普勒频移对于星载AIS通信的影响是最主要的,而大气和气侯情况对星载AIS通信的影响则较小。
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| 关 键 词： | 星载AIS 多普勒频移 天线 载噪比 |
| 文章编号： | 1006-141X(2007)04-0007-05 |
| 修稿时间： | 2007年10月15 |
Primary Research on the Key Technologies of Satellite Based AIS Transceiver |
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| HAO Sheng,CHEN Di-fei.Primary Research on the Key Technologies of Satellite Based AIS Transceiver[J].Avionics Technology,2007,38(4):7-11. |
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| Authors: | HAO Sheng CHEN Di-fei |
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| Abstract: | In this paper,some key techniques application on shipborne AIS to satellite have been investigated.The influence of the ionosphere,rain,multipath distortion,Doppler shift,the CNR of received signal and the design of the antenna used in the satellite are described.The result of studies shows that the effect of Doppler shift plays a major role for satellite-based AIS communication,while the ionosphere and weather affect the communication very little. |
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| Keywords: | satellite-based AIS Doppler shift antenna CNR |
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