“…Special Task UAVs (combat/decoys systems) (Nex and Remondino, 2014) The dissertation of Eisenbeiss provides an alternate way in which UAVs can be classified, which is by being considered as unpowered or powered, as well as lighter than air or heavier than air (Eisenbeiß, 2009 (Eisenbeiß, 2009) From the literature explored throughout this review, in relation to variables such as low cost and usability, the most common platform used for aerial photogrammetry are rotary wing aircraft. Specifically, multi-rotors, which include quadcopters, hexacopters, and octocopters, were seen in the articles read (Aicardi et al, 2016;Bolognesi et al, 2015;Bolognesi et al, 2014;Faltýnová et al, 2016;Fiorillo et al, 2013;Hashim et al, 2012;Stek, 2016;Sun and Cao, 2015).…”