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Hazard Detection Lidar (HDL) is one of a complement of sensors under development as part of the Safe & Precise Landing – Integrated Capabilities Evolution (SPLICE) Program managed out of Johnson Space Center (JSC).
Three researchers make adjustments to a rocket sitting on a launchpad. City lights and the glow of a sunset are in the background.

LiDAR Patch

LiDAR (Light Detection and Ranging) is a technology that uses laser light to measure distances and create detailed maps of surfaces. By calculating how long it takes for light to bounce back, scientists can determine the height and shape of objects, helping them map landscapes on Earth and even explore other planets.

Get This Badge about LiDAR Patch

Age

11+

Duration

~1 hour


LiDAR Patch Activity

Use “laser-like” tools to map a hidden landscape just like a NASA scientist.

  1. Create a color-coded “laser” stick
  2. Measure the hidden landscape
  3. Record your data and create your topographical map
  4. Share your discoveries


What is LiDAR?

Scientists use LiDAR to create topographical maps, meaning a type of map that shows the elevation of different areas. They use this to map different parts of the Earth’s surface, like forests or cities. Some types of LiDAR can see through water, which allows scientists to map the ocean floor!


How do scientists use LiDAR?

Scientists use LiDAR to create topographical maps, meaning a type of map that shows the elevation of different areas. They use this to map different parts of the Earth’s surface, like forests or cities. Some types of LiDAR can see through water, which allows scientists to map the ocean floor!

Scientists also use LiDAR in outer space, to create maps of other planets and moons.