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船舶无线电导航
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船舶无线电导航
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marine radio navigation
船舶无线电导航
利用无线电波测定船位和引导船舶沿预定航线航行的技术。又称无线电航海。根据无线电波的传播特性,测量地面,包括外层空间的导航台发射的无线电波参数,如频率、振幅、传播时间或相位,求得船舶相对于导航台的几何参数,如角度、距离、距离差或距离和,从而建立船位线,实现船舶定位和导航。
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