Asian Surveying & Mapping
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November 25th, 2013
The Aibot X6, a Revolution in the Field of Geo-mapping, Replaces the Tachymeter

The advantages of the Aibot X6 were tested by the company Asker Oppmaling AS from Norway. Matter of the test was a stone quarry near Oslo with the size of 33 ha. Asker compared the ground control points which were measured conventionally with the ones taken by the Aibot X6. The outcomes of this test are spectacular results which make the work of the surveyors much easier and promise an enormous time saving.

“It is insane how much work the X6 saves us. We can control the Aibot from a central location which saves us the laborious walk through the cavern.” Magnus Myhre, general manager, Asker Oppmaling AS.

Comparing the workflow of the conventional survey method with the survey done by the Aibot X6 it quickly becomes clear that the copter will be well-established in the industry. Taking the example of Norway´s stone quarry only the plain survey time would take about 3 to 4 weeks. The surveyors have to walk through the mine by foot in order to collect the data. Domains like dangerous cavities or muddy areas are very hard to access, so most of the time they cannot be measured. Unfortunately, some data gets lost compared to the method with the X6 where all data can be collected. The copter with a width of 1.05m and a height of 0.45m is very small and can reach areas which are difficult to access without any problems. It is able to carry an additional pay load of up to 2.5kg and has, due to the extreme light CPR frame only an own weight of 2,555g. Consequence of size and weight is the enormous flight stability which enables the copter to get great resu lts even with strong wind. The symbiosis of six rotors and the powerful motor guarantee a tremendous lift and a stable flight altitude. The copter reaches a climb rate of 8m/sec and a speed of 60 km/h. In addition the Aibot can be controlled from a central location. The area has not to be covered by foot.  Those qualities are a revolution for surveys and promise a time saving of about ¼ compared to the conventional method using the Tachymeter. This was shown during the test in Norway.

The workflows of mapping with the Aibot X6 are very easy. In the preparatory stage the requirements have to be defined. The ground resolution is practicable from 1mm up to 4mm. Parameters like flight height, speed, overlapping and distance of the trigger position can be planned in very short time by the flight planning software AiProFlight from Aibotix. The project requirements of Asker add up to an area of 33 ha and a pixel size of 22.7 mm. After the requirements have been set the actual flight plan is constructed in order to collect the data. The flight planning is done by the use of the Aibotix AiProFlight Software. Flight direction, resolution, height, route and stereo overlapping will be defined and insert in the mapping device. The flight plan will be constructed and saved by mouse click. At any waypoint assignments like camera position or dwell time can be inserted. As soon as the flight plan is transferred to the Aibot X6 (wireless) it can operate 100 % automatic. In a normal surface flight the pictures will be taken in a 90 degree angle vertical down (nadir). One of the unique features of the Aibot X6 is the rotatable camera mount which guarantees a flight through a stone quarry and generates an almost unachievable detailed resolution of the vertical walls in an angle of 45 degree (oblique). Picture based 3D-modeling software like the AgiSoft or Enso use geo-referenced pictures and build the texture of an orthophoto or a 3D-model. A cost-intensive camera calibration is not necessary. The software used has the opportunity to operate a calibration with help of the determined camera parameters additionally to the workflow.

Magnus Myhre, general manager, Asker Oppmaling AS is thrilled about the Aibot X6: “We are impressed from the Aibot X6. All waypoints are within the accurateness of the high-precision of the Trimble R8 GPS. The amount of work and time is extreme low compared to the conventional method.”