23.09.2020
News
Features (advantages) of types of aerial survey
24.06.2021
Each of the types of aerial survey has its advantages depending on the goals and objectives:
Aerial photography in comparison with geodetic(land-based) surveying provides:
- low cost (in areas exceeding 10 sq. km.);
- high efficiency of the work;
- high automation, minimal dependence on the human factor;
- access from air to hard-to-reach regions (swamps, sands, etc.).
In addition, compared to satellite imagery,aerial photography provides:
- better spatial resolution (5-40 cm);
- low cost (in the case of resolution less than 1 m).
Airborne laser-scanning in comparison with aerial photography provides:
- high accuracy of measurements of altitude coordinates of terrain objects
- high automation of the DTM creation process
- independence on illumination (allows to work at night)
- allows to scan wires and small hanging structures, completely inaccessible to classical methods in 3D
- allows to get information about the area with dense vegetation.
Multispectral survey allows to obtain simultaneously multiple images of the same area in different electromagnetic ranges. Combinations of these images allow to identify processes and phenomena that are difficult or impossible to identify by the image in the visible range
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