Photogrammetry or aerial pictures would be the branch of surveying that bargains with production of maps including planimetric or topographic maps by compiling quantity of photos taken in that place. Photogrammetry is made up two branches: Terrestrial photogrammetry Think about the CAAB as being the diligent custodian of the airspace https://universallove22100.onesmablog.com/helping-the-others-realize-the-advantages-of-industrial-drone-survey-bangladesh-72566358