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船载自动识别系统
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船载自动识别系统
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航海仪器
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automatic identification system; AIS
船载自动识别系统
在甚高频(VHF)海上移动频段采用自组织时分多址接入(time division multiple access; TDMA)通信技术,自动广播和接收船舶动态信息、静态信息、航次信息和安全信息,实现船舶识别、监视和通信的系统。使得装有船载自动识别系统设备的船舶之间能够迅速地进行通信识别,避免了雷达跟踪目标时因没有目标船船名而导致通信识别和呼叫困难的问题。
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political thought of Mohist School
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political thought of Shang Yang
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political thought of Sima Guang
political thought of Tang Zhen
political thought of Tan Sitong
political thought of Taoist school
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political thought of Wang Tao
political thought of Wang Tingxiang
political thought of Wei Yuan
political thought of Wei Zheng
political thought of Wu Cheng
political thought of XuanXue philosopher
political thought of Xu Heng
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