Terrestrial lidar, also known as terrestrial laser scanning, is a remote sensing technology that uses laser pulses to measure the distance to objects on the Earth's surface. This technology allows for the rapid and accurate collection of 3D spatial data, making it valuable for a wide range of applications such as topographic mapping, urban planning, forest management, and cultural heritage preservation. Terrestrial lidar systems typically consist of a laser scanner mounted on a tripod or vehicle, which captures millions of laser point measurements to create detailed and high-resolution 3D models of the environment.