| 宁波-舟山海域船舶接收MSI时的困难分析 |
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| 引用本文： | 张树奎.宁波-舟山海域船舶接收MSI时的困难分析[J].重庆交通大学学报(自然科学版),2008,27(4):638-639,650. |
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| 作者姓名： | 张树奎 |
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| 作者单位： | 江苏海事职业技术学院航海系,江苏,南京211170 |
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| 摘 要： | 海上安全信息(MSI)对船舶航行安全起到非常重要的作用,航行在宁波-舟山海域的船舶在接收上海海岸电台通过HF NBDP播发的MSI时,经常会遇到通信不良,接收信号很差的情况,尤其在夜晚。就这一现象利用无线电通信的有关知识进行了详细地分析,并在此基础上提出了有效的应对措施来改善接收效果,以期对航行在此海域的船舶在接收MSI时有所帮助。
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| 关 键 词： | 海上安全信息 NBDP 电离层 电波 盲区 |
Analysis on Ship's Difficulties in Receiving MSI in Navigation at Area of Ningbo-Zhoushan |
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| ZHANG Shu-kui.Analysis on Ship's Difficulties in Receiving MSI in Navigation at Area of Ningbo-Zhoushan[J].Journal of Chongqing Jiaotong University,2008,27(4):638-639,650. |
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| Authors: | ZHANG Shu-kui |
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| Institution: | ZHANG Shu-kui (Navigation Department,Institute of Jiangsu Maritime,Jiangsu Nanjing 211170,China) |
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| Abstract: | Maritime Safety Information (MSI) plays a very important role in the navigation safety of a ship.Ships,navigating the sea area of Ningbo-Zhoushan,often face many difficulties when they receive the MSI by HF NBDP broadcasting from Shanghai coast station,especially at night.For example,the receiver can not gain any useful signal because of the poor per- formance of communication.An analysis on this phenomenon is given in detail by using the knowledge of radio wave commu- nication theory.And on the basis of ab... |
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| Keywords: | MSI (Maritime Safety Information) NBDP ionosphere radio wave blind spot |
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