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AsteRx-m3 Pro+ GNSS Receiver

The AsteRx-m3 Pro by Septentrio is a high-performance, ultra-low power GNSS receiver ideal for industrial applications where efficiency and space are critical. It utilizes advanced multi-frequency, multi-constellation GNSS technology and anti-jamming algorithms for exceptional reliability.

Designed for rover applications, it offers seamless integration for high-accuracy positioning, available in single or dual antenna configurations. The AIM+ technology protects against jamming and RF interference, ensuring robust operation.

The receiver delivers RTK positioning with the lowest power consumption in its class, allowing extended operation on a single battery charge. The LOCK+ feature maintains accuracy despite vibrations, while the IONO+ system guards against ionospheric disturbances.

APME+ mitigates multipath issues, enhancing position quality. The receiver includes comprehensive documentation and RxTools software for configuration, monitoring, and data analysis. An intuitive web interface allows easy control from any device, with quality indicators for optimal performance monitoring.


The AsteRx SB3 Pro+ by Septentrio stands as the pinnacle of their housed multi-frequency GNSS receivers. Utilizing cutting-edge triple-band GNSS core technology, it ensures reliable centimeter-level RTK positioning and precise sub-degree heading. Versatile in its application, the AsteRx SB3 Pro+ can function as both a rover and a base station, featuring an ultra-high update rate and comprehensive logging capabilities. Encased in a ruggedized IP68 housing, it performs exceptionally well even in the harshest environments.

Mechanical vibrations or shocks from rough terrain can disrupt satellite tracking. The LOCK+ feature automatically adjusts the parameters of the AsteRx SB3 Pro+ to maintain consistent positioning.

Ionospheric activity poses significant challenges to GNSS signals, potentially causing RTK fix loss or complete signal lock loss. Developed through extensive experience in highly iono-active regions, IONO+ provides the most advanced protection against ionospheric disturbances available in any receiver.

Reflective surfaces such as metal structures can cause multipath issues by reflecting GNSS signals. The Advanced Multipath Mitigation Technology (APME+) disentangles direct and reflected signals, enhancing position and measurement quality. APME+ is bias-free and can be disabled if needed for maximum configurability.

Advanced Receiver Autonomous Integrity Monitoring (RAIM+) incorporates comprehensive fault detection mechanisms at all levels, including measurement generation, quality control, and navigation algorithms. Faulty measurements, often resulting from high multipath or active ionosphere, are excluded from the solution.

AIM+ provides robust protection against both intentional and unintentional jamming using sophisticated sampling and mitigation mechanisms. This ensures your high-precision GNSS receiver can automatically suppress a wide range of interferers, from continuous narrow-band signals to complex wide-band and pulsed transmitters, as well as Inmarsat and Iridium satellite transmissions.


Features of the AsteRx-m3 Pro + GNSS Receiver board

  • Flexibility to be used either as a rover or a base station
  • High update rate and low latency ideal for fast moving vehicles or machine parts
  • All-in-view triple-band satellite tracking for reliable RTK positioning accuracy(cm-level)
  • Robust and compact IP68 weatherproof housing, ready for deployment
  • Triple-band GNSS heading available directly from initialization, removes reliance on vehicle dynamics or magnetic sensors
  • Advanced anti-jamming as part of GNSS+ Algorithms

Technical Specifications – AsteRx-m3 Pro GNSS Receiver board

GNSS Signals
GPS: L1 C/A, L1C, L2C, L2 P(Y), L5
Beidou: B1I, B1C, B2a, B2I, B2b, B3I
Galileo: E1, E5a, E5b, E5 AltBoc, E6
QZSS: L1 C/A, L1C/B, L2C, L5
NavIC: L5

Size: 102 x 36 x 118 mm, 4.0 x 1.4 x 4.6 in
Weight: 497 g/1.1 lb
Input Voltage: 5 to 36 VDC

Operating Temperature: -30°C to +65°C, -22°F to +149°F
Storage Temperature: -40°C to +75°C, -40°F to +167°F
Humidity: MIL-STD-810G, Method 507.5, Procedure I
Dust: MIL-STD-810G, Method 510.5, Procedure I
Shock: MIL-STD-810G, Method 516.6, Procedure I/II
Vibration: MIL-STD-810G, Method 514.6, Procedure I

AntaRx-Si3 GNSS/INS Smart Antenna Data Sheet

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