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Septentrio AsteRx-i S IMU-Enhanced GNSS Receiver Board


The AsteRx-i S IMU-enhanced GNSS receiver board is nearing End of Life (EOL). Please contact us for recommendations on a suitable replacement.



The Septentrio AsteRx-i S IMU-enhanced GNSS receiver board generates reliable and accurate orientation and position by processing high-quality data from the AsteRx GNSS receiver with IMU measurements.

The AsteRx-i S IMU-enhanced GNSS receiver board from Septentrio has been designed around demanding requirements for power consumption, weight and size, and is ideal for applications such as UAS photogrammetry, inspection with UAV’s, logistics, robotics and automation.

Septentrio’s multi-frequency, quad-constellation, reliable and accurate RTK is enhanced further by powerful INS/GNSS integration. The AsteRx-i S benefits from Septentrio’s GNSS+ toolkit for best performance. The dual antenna GNSS heading initialization provides reliable 3D positioning and attitude for the point of interest (POI).

Advanced interference monitoring and mitigation (AIM+) offers built-in protection against jamming, both intentional and unintentional, and spoofing by using a sophisticated system of mitigation and sampling mechanisms. The AsteRx-i S suppresses the widest variety of interferences from simple continuous narrow-band signals to more complex wide band and pulsed transmitters, as well as Iridium and Inmarsat satellite transmissions.

The AsteRx-i S features a desktop tool set and an intuitive on-board web user interface for easy monitoring and operation that allows the receiver to be controlled from any mobile device or computer. The web interface also has easy-to-read quality indicators to monitor the receiver operation.

Septentrio is a leader in the market for power consumption. Consuming typically 1.5 W and having a total weight of 38 g (IMU + GNSS receiver), the AsteRx-i is ideal for UAVs where payload and space are at a premium.
The AsteRx-i S allows flexibility of the IMU placement separate from the GNSS receiver allowing for the optimization of space for tight integrations. The versatile design and range of connection interfaces makes the AsteRx-i S ideal for applications in automation, robotics and logistics.


  • Full attitude – heading pitch and roll
  • Reliable and accurate IMU-enhanced GNSS positioning down to cm level
  • AIM+ interference monitoring and mitigation
  • Ultra-lightweight, compact and low power
  • Robust calibration for wide temperature range
  • High-update rate, low-latency attitude and positioning

Technical Specifications

Channel Information
GPS: L1, L2
Galileo: E1, E5b
BeiDou: B1, B2
QZSS: L1, L2
Input Voltage: 3.3 VDC ± 5%
Weight: 28 g / 0.987 oz
Dimensions: 47.5 mm × 70 mm × 7.6 mm
Humidity: 5% to 95% (non-condensing)
Operating Temperature: –40 °C to +85 °C
Storage Temperature: –40 °C to +85 °C
Vibration: 20.4 gRMS Bouyant


The AsteRx-i S IMU-enhanced GNSS receiver board from Septentrio is available through TerrisGPS. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.

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Client Testimonials

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"Thank you for your prompt service. All seems to be working well again. Your techs were very helpful with the troubleshooting."
J.O. - Ground Navigation
"Thanks for all the troubleshooting help, also to John for his assistance and the prompt answers from you guys!"
F.A. - Survey Industry

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