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Septentrio AsteRx SB ProDirect GNSS Receiver

The AsteRx SB ProDirect GNSS receiver from Septentrio utilizes a unique blend of technologies that combines the best RTK heading and positioning in a ruggedized, compact IP 68 housing. Reliable positions are available together with heading and roll angles or heading and pitch directly from system initialization.



The AsteRx SB ProDirect GNSS receiver from Septentrio utilizes dual-antenna inputs combined with centimeter-level RTK, enabling it to provide precise. GNSS heading enables unmatched performance in both dynamic and static conditions, and removes the reliance on magnetic sensors or vehicle dynamics.

Simultaneous multi-frequency, multi-constellation tracking used in combination with the GNSS+ toolset, and the low-latency output and high-update rate, makes the AsteRx SB ProDirect well suited for any industrial application that is space-constrained under any conditions.

Thanks to fully documented data messages, commands and interfaces, the AsteRx SB ProDirect can be integrated into any system seamlessly. Septentrio’s software tools (RxTools) and open interfaces (WebUI) makes it easy to integrate, configure and control the AsteRx SB ProDirect.


  • Sub-degree heading & pitch or heading & roll angles
  • IP68 weatherproof housing
  • Robust and compact
  • Quad-constellation, multi-frequency, all-in-view RTK positioning
  • All-in-one base and rover operation
  • AIM+ unique interference monitoring and mitigation system among other advanced GNSS+ algorithms
  • Open interfaces for easy integration
  • Easy to integrate and monitor with intuitive Web UI

Technical Specifications

GNSS Capabilities
Number of Channels: 448
GPS: L1, L2
BeiDou: B1, B2
Galileo: E1, E5b
QZSS: L1, L2, L5
QZSS: L1, L2
Horizontal Accuracy: 1.2 m (Standalone)
0.6 m (SBAS)
0.4 m (DGPS)
Vertical Accuracy: 1.9 m (Standalone)
0.8 m (SBAS)
0.7 m (DGPS)
RTK Performance: 0.6 cm + 0.5 ppm (Horizontal Accuracy)
1 cm + 1 ppm (Vertical Accuracy)
7 s (Initialization)
GNSS Attitude Accuracy: 1 m – 0.15° Heading, 0.25° Pitch/Roll
2 m – 0.03° Heading, 0.05° Pitch/Roll
Cold Start: < 45 s
Warm Start: < 20 s
Re-aquisition: Avg. 1 s
Size: 102 mm x 36 mm x 118 mm (4.0 inches x 1.4 inches x 4.6 inches)
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


The AsteRx SB ProDirect GNSS receiver 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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