UAVs for surveying and mapping use RTK differential positioning system (which can achieve centimeter-level positioning), which is also to speed up operation efficiency. According to reports, if ordinary GPS positioning is used, in order to correct the error, it is necessary to send someone to deploy several image control points on the spot. However, if RTK is used, it is basically not necessary or only a small number of image control points are needed.
This article tells you what is the use of RTK on surveying drones.
What is RTK
RTK (Real-time kinemaTIc) positioning technology is a real-time dynamic positioning technology based on carrier phase observations. It can provide real-time three-dimensional positioning results of the survey site in a specified coordinate system and achieve centimeter-level accuracy.
What is RTK used for
RTK (Real-TIme kinemaTIc) positioning technology is a real-time dynamic positioning technology based on carrier phase observations. It can provide real-time three-dimensional positioning results of the survey site in a specified coordinate system and achieve centimeter-level accuracy.
As shown in the above figure, the distance between the base station and point A is relatively close, so the atmospheric influences they receive when receiving satellite signals are also basically close. The base station itself knows the coordinates of the location, and after obtaining the coordinates provided by the satellite signals, do it with the original data The new difference, and the difference result is notified to point A, so point A can also get high-precision results.
What is the use of RTK for drones?
Since the introduction of RTK into the UAV field, everyone has known that it can improve the positioning accuracy of UAVs and reduce flight errors. Due to the multi-path effect of satellite signals and the refraction and reflection of satellite signals in the atmosphere, when windbreaks or weather conditions occur around farmland, the positioning accuracy of satellites will be reduced, resulting in unmanned aerial vehicles in operation.
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