Two types of LIDAR are topographic and bathymetric. Topographic LIDAR usually uses a near-infrared laser to map the Earth, while bathymetric LIDAR uses green light that penetrates the water to also measure the elevations of the seabed and riverbeds. LiDAR topography is a fast and efficient way to capture 3D data. The use of laser pulses to calculate distances, capture accurate measurements, and measure ranges is gaining popularity.
This simple way of collecting data is accurate, fast, and flexible. LIDAR is often compared to sonar or radar, which use sound and radio waves, respectively, to map surfaces and detect objects. In most cases, LIDAR uses infrared light. The hardware can be mounted on an airplane, a tripod, a car, or a drone.