LIDAR (Light Detection and Ranging) was a technology used to measure distances and speed by shooting pulses of light at it.

In 2020, the USS Lewis & Clark was equipped with LIDAR and used it to track the alien probe designated C/2018-G2. (TOS novel: The Rings of Time)

In 2032, the Ares IV was also equipped with LIDAR. (VOY episode: "One Small Step")

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