Remote sensors differ according to the type of information that is captured, with electromagnetic waves being particularly interesting in the study of various phenomena, as the electromagnetic radiation reflected or emitted by the Earth is captured by sensors on aerial platforms or orbital and translated into multispectral images. In addition, remote sensors also enable the acquisition of other types of images through RADAR technology. With this information, it is possible to create cartographic elements of extreme importance and usefulness, in several domains. Among the best known orbital platforms (satellites), Landsat, Sentinel and Quickbird stand out.
Another use of remote sensors is the capture of photographs for photogrammetric purposes. The use of this technique in relation to other traditional measurement methods, translates into numerous advantages, such as relatively fast photo collection, availability of a dense record of information with coverage of large areas, evaluation of dynamic phenomena and inaccessible objects and also the mapping update in a reduced time.