Study of the Use of Aerial and Satellite Photogrammetry for Surveys in Hydrology

摘要

The study was undertaken to explore possible applications of photogrammetry in problems of hydrology. The critical factors in the use of satellite photographs are included as part of this study. Also the various physical and economic factors in the use of aerial photogrammetry are analyzed in the measurement of both snow cover and snow depth. It was concluded that the required accuracy can be attained, but sometimes the cost would be prohibitive. The use of aerial photography and other related sensors to some other problems in hydrology are considered. Here it seems that such remote sensing from aircraft offers the hydrologist a feasible means to map some special events where detailed mapping is needed. (Author)