Aerial survey

AERIAL SURVEY (EN: aerial photography, aerial mapping; DE: Luftaufnahme, Luftbildaufnahme; FR: lever aerien; ES: levantamiento por fotografia aerea; RU: аэросъемка) is the remote method for the study of the objects of the Earth's surface within the various ranges of the spectrum of the electromagnetic waves from the aeroplane or other aircrafts.

During the aerial survey, they use: the aerial photography; the multispectral scanner imagery with digital recording (within the same range of the waves, as the photographic imagery); the infra-thermal imagery, which is recording their own thermal radiation of the objects within the (1.2-25 micrometres) range of the wave lengths; the radar imagery, during which the image of the terrain is obtained on the account of the reflection of the electromagnetic waves within the radio range (from several millimetres to several metres) by the surface objects.

They use for the multispectral aerial imagery the integrated single-lens or special multi-lens photographic cameras. They combine the pictures, which have been obtained within the different narrow ranges of the optical spectrum, into one black and white or colour synthesized picture with high interpretive and measurement properties. The modern instruments for the aerial survey are: for the infra-thermal imagery, the thermal imagers, and for the radiolocation, mainly the side-scan radars.

They use the aerial survey within the geology and mining craft for the mapping and searches for the useful minerals, for the identification of the structural elements of the surface, for the compilation of the plans for the opencast developments, and so on.