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Septentrio AsteRx-i S UAS GNSS/INS Receiver Board


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



The Septentrio AsteRx-i S UAS GNSS/INS receiver board provides centimeter-level RTK positioning with 3D attitude and is specifically designed for straightforward integration into Unmanned Aerial Systems (UAS).

The AsteRx-i S UAS GNSS/INS receiver board from Septentrio is a multi-frequency, multi-constellation receiver board specifically designed for straightforward integration into Unmanned Aerial Systems (UAS). It provides centimeter-level RTK positioning and, using Septentrio’s GNSS+ toolkit, the AsteRx-i S UAS provides reliable 3D positioning and attitude for the point of interest.

The AsteRx-i S UAS has a 44 pin connector compatible with 3rd party integrations. The wide input power range of 4.5 to 30 V enables powering the receiver directly from the UAS’ power bus. A camera shutter can be synchronized accurately with GNSS time via event markers.

For ease of integration, the AsteRx-i S UAS hosts an on-board IMU. Users can tether this IMU and install it in any other location. The low power consumption, light weight and compact form of the device was designed to optimize aerial devices’ battery life.

The AsteRx-i S UAS is able to provide INS positioning at the lowest power consumption compared to any other device on the market. This results in longer operation on a single battery charge, simpler integrations and lower heat dissipation.

The AsteRx-i S UAS features advanced Interference Monitoring and mitigation (AIM+), offers built-in protection against unintentional and intentional spoofing and jamming by using sophisticated sampling and mitigation mechanisms. Neighboring electronics can produce RF radiation in robotic devices which interferes with GNSS signals. AIM+ protects against this interference resulting in robust continuous operation and faster set-up times.


  • Accurate and reliable IMU-enhanced GNSS positioning down to the cm level
  • Compact, low-power and lightweight
  • Full attitude – heading, pitch and roll
  • Low-latency positioning and attitude, high update rate
  • AIM+ Advanced Interference Monitoring and Mitigation system
  • Synchronization of camera shutter
  • Robust calibration for wide temperature ranges

Technical Specifications

GPS: L1, L2
BeiDou: B1, B2
Galileo: E1, E5b
QZSS: L1, L2
Input Voltage: 5 VDC or 4.5–30 VDC
Size: 47.5 × 70 × 20 mm
Weight: 60 g / 2.1 oz
Operating Temperature: -40 °C to +85 °C
Storage Temperature: -40 °C to +85 °C
Vibration: MIL-STD-810G


The AsteRx-i S UAS GNSS/INS 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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