Septentrio unveils smallest GNSS receivers

  • May 21, 2025
  • Steve Rogerson

Belgian firm Septentrio, part of Hexagon, has unveiled its smallest GNSS receivers yet, measuring 23 by 16mm and weighing 2.2g.

The compact form factor and reduced power consumption of the Mosaic-G5 receivers enable reliable, high-accuracy positioning without compromises in performance for commercial UAVs, robots, and other size and power-constrained industrial high-volume applications. The GNSS technology provides enhanced positioning availability even in difficult environments where GNSS signals are degraded or obstructed.

“We are excited to further extend and strengthen our highly successful mosaic module family,” said François Freulon, director of product management at Septentrio. “The new receivers answer the growing demand for precise and reliable positioning and GNSS heading in high-volume drone and robotic applications.”

The Mosaic portfolio allows users to choose the receiver that best fits their needs. Entry-level, high-performance positioning is offered by triple-band Mosaic-G5 P1, which is for high-volume applications such as inspection drones or robotic mowers. The quad-band Mosaic-G5 P3 and the triple band heading module Mosaic-G5 P3H bring positioning reliability in difficult environments and are tailored for applications such as delivery or light show drones. Moreover, the Mosaic-G5 P3H module can calculate heading with a small distance between two GNSS antennas (known as baseline), enabling use cases such as accurate navigation of small autonomous devices.

The modules complement the Mosaic product line (www.septentrio.com/en/products/gnss-receivers/gnss-receiver-modules), where the Mosaic-X5 receiver remains as the benchmark for GNSS open signal anti-jamming and anti-spoofing resilience in a small form factor.

The modules are compatible with widely used, open-source autopilots such as PX4 and ArduPilot, reducing development time and complexity. The evaluation kit, called Mosaic-Go G5, simplifies testing with direct autopilot connections, while the free RxTools user interface assists with the setup and evaluation process.

Samples of the Mosaic-G5 P1, Mosaic-G5 P3 and Mosaic-G5 P3H modules (www.septentrio.com/en/septentrio-extends-its-mosaic-family) are available, with volume orders for delivery later this year.

Septentrio (septentrio.com) is an ISO 9001 certified manufacturer of multi-frequency multi-constellation GPS and GNSS positioning technology. Centimetre-level positioning enables machine automation improving efficiency and safety. Septentrio has its headquarters in Leuven, Belgium, and has offices in Los Angeles, Shanghai, Seoul and Yokohama as well as numerous partners around the world. It is a subsidiary of Hexagon (hexagon.com).