AsteRx-U3
Multi-constellation, dual-antenna GNSS receiver
- Full-constellation, triple-frequency satellite tracking on both antennas
- Sub-degree GNSS heading & pitch or heading & roll
- Best-in-class centimeter-level RTK performance
- AIM+ unique interference mitigation system as part of the advanced GNSS+ algorithm suite
- Integrated UHF radio, cellular modem, Bluetooth and Wi-Fi (depending on configuration)

Illustrative image for Septentrio AsteRx-U3 GNSS Receiver Web User Interface (WebUI)
GNSS technology
GPS: L1 C/A, L1C, L2C, L2 P(Y), L5
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GLONASS: L1 C/A, L2C/A, L3, L2P
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Beidou: B1I, B1C, B2a, B2I, B2b, B3I
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Galileo: E1, E5a, E5b, E5 AltBoc
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QZSS: L1 C/A, L1C/B, L2C, L5
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NavIC: L5
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SBAS: EGNOS, WAAS, GAGAN, MSA
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5 constellation RTK (base and rover)
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Interfaces
Hi-speed serial ports (RS232)
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3 |
1 | |
xPPS output (max 100Hz)
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1 |
Event markers
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2 |
General purpose output
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1 |
NTRIP (client)
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1 |
0.6 cm | |
1 cm |
GNSS attitude accuracy
Heading - Antenna separation 1m
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0.15 degrees |
Pitch/Roll - Antenna separation 1m
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0.25 degrees |
Heading - Antenna separation 5m
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0.03 degrees |
Pitch/Roll - Antenna separation 5m
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0.05 degrees |