What Is an Aerial (Photogrammetric) Survey?
Photogrammetry is the science of making measurements and preparing maps from aerial photographs. The process of aerial photogrammetry includes the operations, processes, and products involving the use of aerial photographs. Included among these are the measurement of horizontal distances, the determination of elevations, the compilation of planimetric and topographic maps, the measurement of profiles and cross-sections, and the interpretation and analysis of aerial photographs for engineering investigations. How Is It Done? Aerial photogrammetry uses stereo pairs of photographs to interpret the selected area. The use of an aircraft to take the pictures requires good visibility and favorable wind conditions for a successful flight. Cloud cover, rain, or windy conditions can prohibit the flight for aerial photogrammetry. Office preparation and coordination of information between the ground and aerial survey companies are essential parts of developing a flight plan for the survey. The aer
