Accuracy of the DJI Phantom 4 RTK Using Photogrammetry

Over the past few years, unmanned aerial vehicles (UAVs)—more commonly known as drones—have increasingly become a popular tool for aerial data collection in construction, surveying, mining, and insurance. Utilizing DroneDeploy's software platform, companies capture aerial imagery and generate valuable insights from large data sets, making it possible to see and measure the changes occurring over time on job sites, mines, and properties. But does this method produce results that can meet survey-grade requirements and achieve centimeter-level accuracy?In this white paper, DroneDeploy investigates the ways to validate and improve the accuracy of photogrammetric maps with DJI’s Phantom 4 RTK (P4 RTK). To test the accuracy of the P4 RTK, DroneDeploy created a control point system for a rooftop building survey. Then, 30+ flights were logged—each exploring the effect of flight altitude, overlap, and number of images—and processed using DroneDeploy's Map Engine. These data sets were then used to calculate both the horizontal and vertical accuracy of the measured points, along with the accuracy of linear measurements.Download this white paper to learn:The measurement accuracy results of the DJI Phantom 4 RTK compared to the Phantom 4 ProHow the Phantom 4 RTK can reduce costs associated with traditional survey workflowsThe best practices for producing highly accurate drone maps with DroneDeploy and the DJI Phantom 4 RTKHow to capture ground control data and ensure the accuracy of your drone maps