Light Detection and Ranging (lidar) is a remote sensing system used to gather topographic data. Data are typically collected using aircraft-mounted lasers capable of measuring elevation with great precision. Researchers at EROS combine high-resolution, three-dimensional lidar elevation data with high-resolution satellite images to reveal vegetation characteristics (for example, tree canopy height) or highlight human-made structures such as buildings and dams. They also use these data to create realistic, three-dimensional visualizations of landscapes or events such as floods, forest fires, and landslides.
Learn more about lidar at EROS: