NASA Aims to Reduce Gaps in 3D Maps with CASALS
NASA introduced its laser measurement system, called CASALS, in a statement shared on October 21, 2026. The technology aims to reduce the gaps between measurement lines in three-dimensional maps of forests and terrain. It is not yet a satellite system in orbit; development and flight tests are ongoing.
The cover image is a representative image created with artificial intelligence; it is not a real photograph of CASALS.
How is the Laser Beam Directed?
Instead of deflecting the beam with moving mirrors, CASALS changes the wavelength of the laser. This allows it to scan the ground in a wider strip with light pulses directed at different angles. According to NASA, reducing moving parts is also important for lowering the device's size, weight, and energy requirements.
Forest Structure Can Be Seen in More Detail
The goal is not just to capture an image of the surface. Height differences between the upper parts of trees and the ground can also be measured. This data can provide a more comprehensive map for researchers who want to study vegetation and terrain together.
New Flight Test Planned for 2027
The prototype was tested in NASA's B200 King Air aircraft in November 2024. The team plans to conduct new flights in the summer of 2027. For a space-ready version, the scanning area needs to be expanded and the data-processing software on the device needs to be developed.
