Optical Remote Sensing, as part of Remote Sensing Laboratory, is a research line of the CommSensLab Group at the Universitat Politecnica de Catalunya. Major research work is carried out on elastic, Raman and polarimetric Light Detection and Ranging LIDAR measurements, also the ORS group takes part in some international projects and initiatives as ACTRIS, MPLNET, ChArMEx or ITaRS and colaborates with different institutions as UMASS MIRSL or NASA