TY - JOUR AU - Salamanca Céspedes, Jorge Enrique AU - Pérez Castillo, José Nelson PY - 2007/11/30 Y2 - 2024/03/28 TI - LIDAR, una Tecnología de Última Generación, para Planeación y Desarrollo Urbano JF - Ingeniería JA - Ing. VL - 13 IS - 1 SE - Science, research, academia and development DO - 10.14483/23448393.2090 UR - https://revistas.udistrital.edu.co/index.php/reving/article/view/2090 SP - 67 - 76 AB - A typical LIDAR system rapidly transmits pulses of light that reflect off the terrain and other height objects. The return pulse is converted from photons to electrical impulses and collected by a high-speed data recorder. Since the formula for the speed of light is well known, time intervals from transmission to collection are easily derived. Time intervals are then converted to distance based on positional information obtained from GPS receivers and the on-board Inertial Measurement Unit (IMU) that constantly records the attitude of the aircraft. LIDAR systems collect positional and elevation data at pre-defined intervals. The resulting LIDAR data is a very dense network of elevation postings. The accuracy of LIDAR data is a function of flying height, laser beam diameter (system dependent), the quality of the GPS and IMU data, and post-processingprocedures. Accuracies of ±15cm (horizontally) and ±15cm (vertically) can be achieved. Accuracies better than 7cm (vertically) were achieved. ER -