之后激光高度计将参照光速，计算出反射脉冲的渡越时间，从而获得飞船与月球表面之间的距离。
From the return pulse, LOLA determines the time of flight which, accounting for the speed of light, reveals the distance from the spacecraft to the lunar surface.
月球探测器上的激光高度计(LOLA)的工作原理为：发射一束激光脉冲，利用光学镜片将其分为五道光线，当光线到达月球表面后会自动反射至激光高度计上。
The lunar Orbiter laser Altimeter (LOLA) works by sending a laser pulse through an optical lense that splits it into five beams that are each scattered back after they strike the lunar surface.
在传感器上施加电磁脉冲，通过时间域反射计记录反射数据。
Electromagnetic pulses are applied to the sensor and the reflections are recorded with a time domain reflectometer.
在传感器上施加电磁脉冲，通过时间域反射计记录反射数据。
Electromagnetic pulses are applied to the sensor and the reflections are recorded with a time domain reflectometer.
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