The AsteRx-m3 Fg is a best-in-class OEM GNSS receiver board from Septentrio, distributed by Xtragen Technologies Pvt. Ltd. It is specifically engineered for marine survey, offshore construction, and high-precision positioning applications. With its multi-frequency, multi-constellation tracking and dual-antenna capability, it delivers unmatched accuracy, reliability, and robustness in the most challenging environments at sea.

This compact, lightweight, and ultra-low power receiver can be configured as either a base station or a rover, making it highly versatile for diverse applications. In dual-antenna mode, it provides precise GNSS-based heading with sub-degree accuracy, along with pitch or roll information, eliminating the need for magnetic sensors or reliance on vehicle dynamics.

Key Features & Advantages

• Multi-constellation, triple-frequency tracking: GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS, and integrated L-band receiver.
• 544 hardware channels for simultaneous tracking of all visible signals.
• High-accuracy positioning with RTK (0.6 cm + 0.5 ppm horizontal) and Fugro Marinestar PPP corrections.
• Dual-antenna mode for sub-degree heading, pitch, and roll accuracy (0.03° heading with 5 m antenna separation).
• Ultra-low power consumption (as low as 750 mW), enabling longer operation on smaller batteries.
• High update rates & low latency: up to 100 Hz measurements, <10 ms latency.
• Rugged reliability with Septentrio's patented GNSS+ technologies:
  • AIM+: advanced anti-jamming & anti-spoofing interference mitigation.
  • LOCK+: robust tracking under shocks and vibrations.
  • IONO+: protection against ionospheric disturbances.
  • APME+: multipath error reduction.
  • RAIM+: receiver autonomous integrity monitoring.
• Easy integration with fully documented interfaces, RxTools software suite, SDK for Windows/Linux, and Web UI for monitoring and configuration.
• Connectivity options: Ethernet, USB, 4 high-speed serial ports, NTRIP (server/client/caster), FTP/SFTP, event markers, and PPS output.

Performance Highlights

• RTK accuracy: Horizontal 0.6 cm + 0.5 ppm, Vertical 1 cm + 1 ppm.
• Time to first fix: Cold start <45 s, Warm start <20 s, Re-acquisition ~1 s.
• Velocity accuracy: 0.03 m/s.
• Time precision: 5 ns (xPPS out).
• Event accuracy: <20 ns.

Physical & Environmental

• Size: 47.5 × 70 × 9.32 mm Weight: 27 g.
• Input voltage: 3.3 VDC ±5%.
• Power consumption: 750 mW (GPS L1/L2), 1000 mW (all signals).
• Antenna connectors: 2 × MMCX, supply 3–5.5 VDC, max 150 mA.
• Operating temperature: -40°C to +85°C.
• Certifications: RoHS, WEEE, CE, FCC.
• Durability: MIL-STD-810G vibration tested.

Applications

• Marine survey & dredging
• Offshore construction & operations
• Hydrographic mapping
• Precision navigation for vessels
• Heading, pitch, and roll determination

The AsteRx-m3 Fg combines state-of-the-art GNSS technology, ultra-low power design, and rugged reliability, making it the ideal solution for professionals who demand accuracy, efficiency, and seamless integration in marine environments