Thanks to the internal synchronization of the GNSS position and camera, the Timestamp.MRK file provides a precise recording of the highly accurate image position. Additionally, the Phantom 4 RTK converts the satellite data on the fly to the RINEX format (Receiver Independent Exchange Format) and writes the data into a RINEX.obs file. The DJI Phantom 4 RTK captures original satellite observation data as well as the ephemeris data and stores it in a PPKRAW.bin file in RTCM 3.2. In areas with lack of RTK coverage, the DJI Phantom 4 RTK allows for the use of Post Processed Kinematics (PPK). The distortion parameters gathered are saved into each image’s metadata, letting post-processing software adjust uniquely for every user. To ensure each Phantom 4 RTK offers unparalleled accuracy, every single camera lens goes through a rigorous calibration process where radial and tangential lens distortions are measured. Due to the high resolution, the Phantom 4 RTK can achieve a Ground Sample Distance (GSD) of 2.74 cm at 100 meters flight altitude. The mechanical shutter makes mapping missions or regular data capture seamless as the Phantom 4 RTK can move while taking pictures without the risk of rolling shutter blur. The drone is equipped with a 1” 20 megapixel CMOS sensor. Additionally, TimeSync ensures that the Phantom 4 RTK records factory-calibrated lense parameters alongside position, altitude and other data onto each photo, matching the positioning data to the center of the camera’s CMOS sensor and thus optimizing the results from photogrammetric methods. To take full advantage of the Phantom 4 RTK’s positioning modules, the new TimeSync system was created to continually align the flight controller, camera and RTK module. The Phantom 4 RTK can be integrated into any workflow, with the ability to connect its positioning system to the D-RTK 2 Mobile Station, NTRIP (Network Transport of RTCM via Internet Protocol) using a 4G dongle or a WiFi hotspot. ![]() The RTK module can provide positioning accuracy of 1cm+1ppm (horizontal), 1.5cm+1ppm (vertical), and the Phantom 4 RTK can get the 5cm absolute horizontal accuracy of photogrammetric models. Combining both modules, the Phantom 4 RTK is able to optimize flight safety while ensuring the most precise data is captured for complex surveying, mapping and inspection workflows. Sitting just beneath the RTK receiver is a redundant GNSS module, installed to maintain flight stability in signal-poor regions such as dense cities. ![]() Combined with the RTK positioning module (GPS L1 L2, GLONASS L1 L2, Galileo E1 E5a and BeiDou B1 B2) it potentially reduces the number of GCPs needed to 0, which saves at least 75% in set-up time. The DJI Phantom 4 RTK has an in-built centimeter-accurate RTK navigation positioning system and a high-performance imaging system. “We took feedback from the drone mapping and surveying market on board and believe this solution demonstrates our commitment to strengthening our involvement and innovation in different enterprise verticals where we see substantial demand and potential for growth.”Ī new RTK module is integrated directly into the drone, providing real-time, centimeter-level positioning data for improved absolute accuracy on image metadata.Ī non-RTK drone requires up to 40 ground control points (GCP) per square kilometer which takes several hours to place. "The Phantom 4 RTK was engineered to meet the specific needs of its users who have come to rely on DJI drones as powerful tools for surveying, mapping or inspection operations,” said Sunny Liao, Director of Enterprise, Europe at DJI. DJI’s Most Compact And Accurate Low Altitude Mapping Solution To DateĭJI, the world's leader in civilian drones and aerial imaging technology, today announced the global rollout of the Phantom 4 RTK, a high-precision aerial survey drone that combines centimeter-level navigation and positioning with a high-performance imaging system to improve survey efficiency and accuracy, reducing operational difficulty and cost.
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