AsteRx SBi3 Pro

Ruggedized receiver for high-accuracy positioning and orientation

  • Accurate and reliable IMU-enhanced GNSS positioning down to centimeter level 

  • Quad-constellation, multi-frequency, all-in-view RTK positioning 

  • Single antenna GNSS/INS with heading, pitch and roll 

  • Robust and compact IP68 weatherproof housing 

  • AIM+unique interference monitoring and mitigation system + advanced other GNSS+ algorithms 

  • Fast and easy integration with the intuitive Web User Interface, automatic lever arm optimization and support Knowledge Base

AsteRx SBi3 Pro GNSS/INS multi-frequency receiver delivers reliable centimeter level positioning together with 3D orientation in challenging environments. Thanks to the built-in inertial sensor, it provides orientation (heading, pitch and roll) as well as dead reckoning, making it a perfect solution for systems that require positioning under any condition. This housed high-performance GNSS/INS system is ideal for rapid integration into machine control or ground robotic applications.

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Get to know our integrated GNSS+INS receiver

Septentrio’s renowned multi-constellation, multi-frequency RTK is further enhanced by a powerful GNSS/INS integration that allows to have accurate heading, pitch and roll using a single antenna for the most efficient and lean integration. The integrated positioning + orientation solution of AsteRx SBi3 Pro streams out into several wired connectors. With clear marking of the inertial reference point together with a sturdy mounting connector, it is an ideal system for those who are looking for an intuitive GNSS/INS, ready for production. 


Septentrio reliable centimeter-level positioning is based on true multi-frequency, multi-constellation GNSS (GPS, GLONASS, Galileo, BeiDou, QZSS) technology. AsteRx SBi3 Pro combines GPS/GNSS and an industry-grade IMU (Inertial Measurement Unit) to deliver precise positioning together with 3D attitude (heading, roll, pitch). Septentrio’s unique GNSS – IMU integration algorithm enables continuous positioning in environments of low satellite visibility where short GNSS outages are possible. This is referred to as dead reckoning or coasting and can happen near high structures, under bridges or under thick foliage. This makes AsteRx SBi3 Pro a robust positioning solution for machinery operating in environments challenging for GNSS, such as in container yards, urban canyons or near cliffs. 

Mechanical vibrations or shocks caused by rough terrain can wreak havoc with satellite tracking. LOCK+ automatically adjusts the parameters of this receiver so you never lose position. 

Activity in the ionosphere is a problem for GNSS signals, from loss of RTK fix to total loss of signal lock. Having honed our skills, supporting applications in the most iono-active areas on Earth,  the result is IONO+: the most advanced protection against ionospheric disturbances to GNSS signals on any receiver. 

Metal and large nearby structures can reflect GNSS signals and produce multipath. The APME+system effectively disentangles direct and reflected signals enhancing both position and measurement quality. APME+ is bias free and, in line with Septentrio’s commitment to maximum configurability, can be disabled. 

Advanced Receiver Autonomous Integrity Monitoring (RAIM+) comprises fault detection mechanisms of the receiver at all the levels including the generation of measurements, quality control and navigation algorithms. Detected faulty measurements, which are typically caused by high multipath or active ionosphere, are removed from the solution. 

AIM+ anti-jamming and RF spectrum monitoring system 


AIM+ offers built-in protection against intentional and unintentional jamming using a sophisticated system of sampling and mitigation mechanisms. Your high-precision GNSS receiver can automatically suppress the widest variety of interferers from simple continuous narrow-band signals to the more complex wide band and pulsed transmitters as well as lnmarsat and Iridium satellite transmissions


Intuitive web user interface

Illustrative Web UI

This receiver includes an intuitive web user interface for easy operation and monitoring allowing you to control the receiver from any mobile device or computer. The web interface also uses easy-to-read quality indicators ideal to monitor the receiver operation during the job at hand. 

Ease of operation

Wired, robust connectivity is available on the back panel. The AsteRx SBi3 Pro GNSS receiver includes USB, Serial and Ethernet  communication with the aid of robust professional ODU connectors.


Request your AsteRx SBi3 Pro demo

GNSS technology

GPS: L1 C/A, L1C, L2C, L2P, L5
BeiDou: B1I, B2I, B3I
Galileo: E1, E5a, E5b
QZSS: L1C/A, L2C, L5

Septentrio’s patented GNSS+ technologies

AIM+ : anti-jamming, anti-spoofing Advanced Interference Monitoring and Mitigation
More info


Unique anti-interference system monitors, flags and mitigates narrow and wideband interference, jamming and spoofing.

More info
FUSE+ : fusion of RTK positioning with an inertial sensor and more
More info


Sensor fusion for improved availability in any environment condition.

More info


Hi-speed serial ports (RS232)
Ethernet port (TCP/IP, UDP, LAN 10/100 Mbps)
More info
Power over ethernet
High-speed/full-speed USB device port
Event markers
NTRIP (client)

Integrated position accuracy

Standalone - horizontal
More info

Open-sky conditions. RMS levels.

1.2 m
Standalone - vertical
1.9 m
SBAS - horizontal
0.6 m

Integrated position accuracy

SBAS - vertical
0.8 m


7 s

Product datasheet

Support documentation

AsteRx SBi3 User Manual v1.4
4.68 MB
3D drawing
4.47 MB

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