Lidar, which stands for Light Detection and Ranging, is a teledetección technology that uses laser light to measure distances and generate precise, three-dimensional information about the physical characteristics of the Earth and its surface. It works by emitting rapid pulses of laser light toward a target and measuring the time it takes for each pulse to bounce back. This time delay is then converted into distance, enabling the creation of detailed topographical maps.
Un sistema Lidar típicamente consiste en un láser, un escáner y un receptor GPS especializado. El láser emite miles de pulsos por segundo, y el escáner dirige estos pulsos para cubrir un área amplia. El receptor GPS ayuda a posicionar con precisión los datos de Lidar en coordenadas geográficas.
La tecnología Lidar se usa ampliamente en diversos campos como la silvicultura, agriculture, environmental monitoring, and planificación urbana. In forestry, it helps in estimating tree height and canopy structure. In agriculture, it can be used for precision farming by assessing crop health and soil conditions. Additionally, Lidar is instrumental in creating digital elevation models (DEMs) for flood modeling and assessing natural hazards.
There are two main types of Lidar: airborne Lidar, which is mounted on aircraft or drones for large-scale mapping, and terrestrial Lidar, which is ground-based and used for detailed surveys of specific areas. The data collected by Lidar can be processed to create 3D models, provide insights for investigación científica, and inform decision-making in urban development and infrastructure projects.