U-blox positioning enables massive drone light show

The 10-minute-long drone show included a flying dove with a wingspan of 600 meters, visible from three kilometers away. (Photo: u-blox)

U-blox supplied the high-accuracy technology that made it possible to fly a massive swarm of drones. The simultaneous flight of 2,198 miniature unmanned aerial vehicles (UAVs) was launched into the night sky over Saint Petersburg, Russia, on Sept. 3.

The 10-minute-long drone show included a flying dove with a wingspan of 600 meters, visible from three kilometers away.

Geoscan, which built and programmed the drones and ran the display, chose u-blox positioning technology for its combination of accuracy, reliability, performance and ability to access positional data from both the GLONASS and GPS satellite navigation constellations.

The 10-centimeter-wide Geoscan Salute drones were designed for use in group flights and drone shows. The drones use u-blox NEO-M8P high-precision GNSS modules to provide the positioning data to create a fluid drone show. Salute drones return to their base stations automatically at the end of a show.

The NEO-M8P module implements a real-time kinematic (RTK) approach that improves positional accuracy by comparing the phase of a signal being broadcast from a positioning satellite with that of the same signal that has been received and rebroadcast from a fixed base station. The accuracy gained in this way enables drones to calculate their relative positions to within millimeters, and their absolute positions to within 1 centimeter of the intended position.

Geoscan has been producing drone displays for the past two years, starting with 40 drones flying at once. “The u-blox modules in our Geoscan Salute drones have improved our drones’ positioning accuracies to about one centimeter, and have helped reduce pre-launch preparation time,” said Semen Lapko, head of Drone Show Project, Geoscan. “Drones now move more quickly and accurately, while also operating more efficiently.”