What exactly is geo-mapping and aerial survey?
We believe that the future of aerial surveying is not fixed and static, but flexible and dynamic. It´s a great way to receive data for orthophotos, 3D models in high resolution with great accuracy. We also offer you an in-house flight planning software, suited for simple dealing with data and parameters.
Aerial survey is a great solution for various kinds of applications. It can be used to deal with challenging sites such as quarries, sand pits, landfills, coal stockpiles. When using the drones in order to create aerial maps, you can undoubtedly go places that conventional equipment cannot reach. Moreover, you acquire more safety for your surveying staff and save time and costs.
Advantages of aerial mapping
Connection of a drone and a very precise GPS receiver is one of the crucial areas of the future aerial mapping development. Another important feature is special software, suited for data processing and virtual map making. This software allows importing the data gathered by the precise GPS receiver. Each image is connected to a required data package, which is important for further georeferencing and coordinate system making.
A common UAV survey can typically produce up to 500 high quality images per square kilometer, at 1cm to 5cm resolution. In addition, the detail obtained from the individual imagery or orthorectified mosaics usually surpasses anything else what is presently accessible even from satellite or classical aerial photography.
Aerial mapping step by step
The first step of UAV mapping is always preparation. There you should define your requirements and flight parameters, such as altitude, airspeed, overlap and distances. In a next step is done the actual flight plan, including precise directions, amount, routes and such. As a next step is usually recommended to create control points for each hectar in order to achieve high accuracy geo-referencing. After that follow flight operations. Common recording while surface flight is performed at a 90° degree angle for capturing the images orientated straight down to the surface.
GPS coordinates are connected directly to the photo’s data, which allow processing the geo-referenced data in many GIS systems. After all that you can finally create 3D models and orthophotos. Conventional aerial photos are limited regarding their use in GIS because they are not true to scale. In order to create a scale correct photograph that can be accurately measured, an orthographic projection is definitely necessary, in which the view is straight down over every point in the photo. An orthographic photo can be really used to measure precise distances, for it is an accurate representation of the Earth´s surface.
Carbon-Based Technology, Inc. devoted in complete system design, integration, manufacturing, and global marketing of Unmanned Aircraft System. We not only can offer high reliability Unmanned System as a platform for “Intelligence Gathering”, but also can offer total solutions for various aspects. If you need further details about aerial mapping and UAVs, welcome to browse our website or contact with Carbon-Based directly!
Article Source: http://vespadrones.com/uav-mapping/