00000nam 2200000za 4500 9.837266 CaOODSP 20250314131643 cr ||||||||||| 170526s2016 oncab ob f000 0 eng d CaOODSP eng n-cn-nk M103-3/27-2016E-PDF Prévost, Christian, 1952- Ground control point acquisition for Acadia Forest, New Brunswick, during winter 2016, in support of Canada Centre for Mapping and Earth Observation snow depth from unmanned aerial vehicle activities [electronic resource] / C. Prévost, R. Fernandes, F. Canisius. [Ottawa] : Natural Resources Canada, 2016. 42 p. : col. ill., col. maps. Open file ; 27 Includes bibliographical references. "Canadians live with snow cover for a varying period of time during the year. Managers, engineers and researchers require up-to-date snow information such as coverage, depth and water content. These elements can be quite difficult to accurately measure. A stepwise approach is recommend, focusing on snow surface, and monitoring of snow melt. For the last few years, Unmanned Aerial Vehicles (UAV-drone) can be used for multi-temporal aerial surveys of snow cover. To generate accurate geographically located UAV-derived products, a high precision GPS survey of the field site is required prior to UAV data collection. Precise geographically known reference points (ground control points) are marked in the field and located in the UAV imagery during geo-correction processing. A case study was completed in a test site located in the Acadia forest near Fredericton, NB. This document describes in detail the method and results of the GPS survey used for the geographic rectification of numerous photographs acquired by the UAV within the scope of this project”--Summary provided by publisher. gccst Snow gccst Geographic data gccst Global positioning systems gccst Remote sensing Canisius, Francis. Fernandes, Richard Anthony, 1967- Canada. Natural Resources Canada. Geomatics Canada. Open file (Geomatics Canada) 27. (CaOODSP)9.821474 PDF 2.22 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M103-3/M103-3-27-2016-eng.pdf 299101