AsteRx-i S

GNSS/INS positioning and attitude receiver


AsteRx-i S integrates high-quality data, from the single or dual antenna multi-frequency AsteRx GNSS receiver with IMU measurements to generate an accurate and reliable position and orientation.

Key features

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

Designed for demanding requirements for size, weight and power consumption, the AsteRx-i S is ideal for applications such as unmanned ground vehicles, automation, robotics and logistics.

The GNSS/INS AsteRx-I also comes also in UAS version designed specifically for straightforward integration into Unmanned Aerial Systems (UAS): AsteRx-i S UAS

The GNSS+ technologies convert bad environments into good positioning and orientation

Septentrio’s multi-constellation, multi-frequency, accurate and reliable RTK is further enhanced by a powerful GNSS/INS integration. Benefiting from Septentrio’s GNSS+ algorithms for best performance, the AsteRx-i S UAS provides reliable 3D attitude and positioning for the point of interest.

AIM+ anti-jamming and RF spectrum monitoring system

All Septentrio high-precision GPS/GNSS receivers feature AIM+, the most advanced onboard  radio frequency interference (RFI) monitoring and mitigation technology on the market. It can suppress the widest variety of interferers, from simple continuous narrowband signals to the most complex wideband and pulsed jammers. The built-in protection against intentional and unintentional jamming and spoofing uses a sophisticated system of sampling and mitigation mechanisms. The RF spectrum can be viewed in real-time in both time and frequency domains.



Advanced Interference Monitoring and mitigation (AIM+) offers built-in protection against intentional and unintentional jamming and spoofing using a sophisticated system of sampling and mitigation mechanisms. In robotic devices neighboring electronics can produce radiofrequency radiation which interferes with GNSS signals. AIM+ offers protection against such interference resulting in faster set-up time and robust continuous operation. A built in spectrum plot allows you to analyze interference and locate interference. The AsteRx-i S can suppress the widest variety of interferers from simple continuous narrow-band signals to the complex wide band and pulsed transmitters. 

Intuitive tools and web user interface


GUI Animated

Unique low power consumption


Septentrio’s core hardware technology allows the AsteRx-i S to be the market-leader in low power consumption. Consuming typically 1.5 W and having a unique total weight of 38 g (IMU + GNSS receiver), the AsteRx-i is ideal for robotic devices where space and payload are at a premium.



AsteRx-i S placement

The AsteRx-i S allows flexibility of the IMU placement separate from the GNSS receiver, allowing you to optimize space for tight integrations. The versatility of design and range of connection interfaces extend the AsteRx-i S applicability to automation, robotics and logistics.



AsteRx-i Industries


Download the product datasheet below