Model produced at 60M grid pattern and taking 70 stills using 80% overlap
Skylark Aerial Photography is conducting more aerial survey using conventional drones, such as the DJI Mavic Pro 2 and the Inspire. If weather is not suitable for the latter, then an all weather drone can be deployed.
Conventional drones are excellent at carrying out aerial survey. But the issue is they are not accurate to 2.5cm when required by surveyors conducting measurements of land or buildings.
At some point fixed ground points have to be used, a drone can then be placed over the point and aligned with this feature.
However it would be simpler if the drone could identify its position in time and space using an accurate GPS System. RTK (Real Time Kinematic).
RTK vs non-RTK drones
Non-RTK drones – are they accurate?
When you fly a non-RTK drone with an onboard GPS receiver or a receiver along with the camera. Positions are trilaterated from satellites Pso their positions are identified by several distance measurements.
Normally, you can expect an inaccuracy of up to several meters. Especially in Z directions, depending on the equipment quality and the satellite geometry.
RTK drones – reliant on a link
With a data-link connection, such as GSM or Wi-Fi, an RTK drone will connect to a base station or a virtual reference station (VRS) via the laptop which controls the flight.
The camera positions are calculated in real-time, referring to ground references. The locations are accurately measured for a long period of time. Calculation helps correct the camera positions up to two to three centimetres of accuracy, both horizontal and vertical.
Contact Skylark Aerial Photography for your survey requirements.
Recent Comments