Unamaned Aerial Vehicles(UAVs) popularly known as Drones have become proven technology in the sphere of Aerial Mapping. Drone and aerial mapping services are increasingly becoming the go-to solution for many Geospatial professionals and industries. At Orbital Africa, we employ latest drone/UAV technology incorporating SenseFly hardware (drones) and Pix4D software products. Below is a simple workflow of Drone Images/Big Data processing.
1: Entails selecting area to be mapped and can be done using the SenseFly eMotion Software.DETAILS...
2: Drone or UAV is launched after flight planning to fly and capture the images within AoI defined.DETAILS...
Orbital Africa is the leading drone/UAV mapping company in Kenya and Africa region at large. We employ a number of drones e.g. DJI Phantom 3, eBee SenseFly from various manufacturers across the globe. Several software available in the market for processing drone images and creating orthomosaics and Digital Surface Models (DSMs), Digital Elevation Models (DEMs) etc. include Pix4D, Agisoft among others. Drones for mapping normally fly at an altitude of 100 metres to 300 metres.
Notably, the spatial resolution of the drone images decreases considerably with increase in altitude but the drone is capable of capturing large image scenes. With the drones, one can obtain an image of up to 2cm spatial resolution!
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Arguably, with a large increase in the amount of physical data being collected, this does mean an increase in office time spent processing and utilizing this data. However, this expansion is canceled out many times over by the huge time savings a drone produces out in the field. Many of senseFly’s surveying customers say, for example, that large jobs that once took weeks can now be completed in just a few days, and that a week’s worth of traditional data collection is now achieved in just one day. Last but not least, less time spent on the ground means staff safety is improved by minimizing risk to surveying teams when measuring sites such as mines, unstable slopes and transport routes. Simply choose take-off and landing locations that are out of harm’s way.
Orbital Africa has successfully carried out many Drone/UAV Mapping projects in Kenya and Africa region at large. Recently, we conducted drone mapping project in a 17-acre parcel of land in Kiambu County. The outputs of the project was a 3cm resolution Orthomosaic, a DEM, DSM and Contours. The sample Orthomosaic can be viewed here: >>Kiambu Drone Project.
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