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调频式无线电高度表
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调频式无线电高度表
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无线电频率导航
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FM radio altimeter
调频式无线电高度表
利用频率调制的无线电信号,通过测量发射信号和经地面反射信号间的差拍频率,获得飞行载体相对地面的垂直距离(即相对高度)的无线电频率测高设备。
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department of culture industry management
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Department of Library and Museum Science of the National Society Education College
Department of Library Science, National University of Shanghai
Department of Library Science of University of Nanking
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