The use of unmanned aerial vehicle (UAV) is rapidly expanding as geospatial and construction industries has learnt how much easier compared to the previous job and more cost-effective in completing surveying and mapping projects can be done with drones. UAV Surveying can significantly reduce the time spent on the projects by collecting accurate surveying data in an effective timeframe. Drone surveying company in Singapore such as MIRS Innovate can provide the professional services to the clients. Drone survey service is easier for the customers to collect the data as the drone can reach to the hard-to reach area and dangerous terrain. Nowadays, drone survey methodology is being investigated and improved by using the drone mapping software such as Pix4d and etc.
From the drone survey, Ground Sampling Distance (GSD) is defined as the distance between two consecutive pixel centers measured on the ground. In practice, it is simply the size of the pixel in the field. This is one of the important parameters of your accurate survey. Drone application in surveying has become popular in Singapore as Singapore Government encouraged industries to use the latest drone technology to improve the productivity.
LiDAR Vs. Photogrammetry
LiDAR Imaging Technology is produced through the light-based sensors, which bounce waves across the surface of the terrain below. The way this type of imaging generated can pass through the complicated topography such as bramble and provide an accurate data to create the image which may not be visible. Photogrammetric imaging is based on the photographic imagery which is to take a huge number of snapshots to render a 2D or 3D version of the terrain. It is unable to penetrate the topography if there has the obstacle like brush and thorns, so the perception of the actual ground terrain may not accurate as LiDAR.
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