loran

lo.ran

n.（名词）
A long-range navigational system in which position is determined by an analysis involving the time intervals between pulsed radio signals from two or more pairs of ground stations of known position.
洛伦：一种长距离导航系统，通过对两个或更多对已知位置的地面站发出的无信电脉冲的时间间隔的分析来测定方位

来源：
lo(ng-)ra(nge) n(avigation)
lo(ng-)ra(nge) n(avigation)