LIDAR, which stands for Light Detection and Ranging, is a technology that uses laser light to measure distances. It works by sending out laser pulses and measuring the time it takes for the light to bounce back after hitting an object. This information helps create detailed 3D maps of the environment, making it useful in various fields like geography, forestry, and urban planning. LIDAR systems can be mounted on airplanes, drones, or ground vehicles, allowing for versatile data collection. The high precision of LIDAR makes it valuable for applications such as self-driving cars, where accurate mapping is essential for navigation and safety.