Aerial surveys done with unmanned aircraft or drone by a remote operator on the ground. Fast and high precisions which can be collect over any terrain or infrastructure. Able to be flown in most weather conditions while still producing reliable data. The systems can produce aerial images, orthophotos or DSM images with accuracies normally seen around 0.02m. Used in a wide variety of industries and applications such as: Surveying & Engineering; Civil and Heavy Earthworks Construction; Mining, Disaster Relief; Conservation and Forestry and Agriculture.