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.

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。

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This paper mainly introduces a test method of altitude measurement in a static state for a new type of a pulse radar altimeter installed in a CK1E target drone model.

本文主要介绍一种新型脉冲雷达高度表，装于CK1E超低空靶机模型上静态测高的试验方法和结果。

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So studying on area target's detection algorithms for airborne pulse radar altimeter seem to be important.

因此，基于对雷达高度表面目标的二进制积累检测算法的研究显得尤为重要。

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With every pulse, the altimeter gave a loud beep, and then a fainter beep as the echo returned.

NPR: Excerpt: 'Skybreaker'

It has also scanned the surface of the planet using Mola (Mars Orbiter Laser Altimeter), which beams an infrared laser pulse towards the surface of the Red Planet 10 times a second.

BBC: New view of giant Martian volcano