AsteRx-U3 Marine
Multi-constellation, dual-antenna GNSS receiver for marine applications
- Full-constellation, triple-frequency satellite tracking on both antennas
- Sub-degree GNSS heading & pitch or heading & roll
- Centimeter-level (RTK) performance and sub decimeter-level (PPP) position accuracy
- L-band reception, robust against Iridium and Inmarsat uplink interference
- Support for FUGRO Marinestar corrections
- AIM+ unique interference mitigation system as part of the advanced GNSS+ algorithm suite
- Integrated UHF radio, cellular modem, Bluetooth and Wi-Fi

Septentrio’s patented GNSS+ technologies
Interfaces
Hi-speed serial ports (RS232)
|
3 |
1 | |
High-speed/full-speed USB device port
|
1 |
Event markers
|
2 |
xPPS output (max. 100 Hz)
|
1 |
Integrated bluetooth (2.1 + EDR/4.0)
|
1 |
EU 4G LTE model
4G compatibility in Europe and other regions: 4G LTE CAT4 (B1, B3, B5, B7, B8, B20), 3G UMTS/HSDPA/HSUPA (850/900/1900/2100), 2G GSM/GPRS/EDGE (850/900/1800/1900) |
|
Integrated WiFi (802.11 b/g/n)
|
|
Integrated position accuracy
1.2 m | |
Standalone - vertical
|
1.9 m |
SBAS - horizontal
|
0.6 m |
SBAS - vertical
|
0.8 m |
DGNSS - horizontal
|
0.4 m |
DGNSS - vertical
|
0.7 m |
Product datasheet
Related knowledge base articles
Applications
Insights

Integrity: Can you really trust your GPS position?
So you’re getting a consistent position from your receiver, but how do you know that this position is correct? Find out what is meant by integrity of GNSS receiver positioning and why it is important.

OSNMA: the latest in GNSS anti-spoofing security
To further improve transmission reliability, the European GNSS system, Galileo, has developed the OSNMA anti-spoofing service, which allows secure end-to-end transmission from Galileo satellites to OSNMA-enabled GNSS receivers.

GNSS Corrections Demystified
GNSS Corrections play a vital role in high-accuracy positioning. This insight explores the concept of GNSS corrections and the three top correction methods: RTK, RTK-PPP and PPP. It highlights their strengths and weaknesses and offers insight to help decide which correction method might work best for your technology.

What is spoofing and how to ensure GPS security?
This insight article on GPS / GNSS spoofing explains what spoofing is and how to make your GPS / GNSS receiver secure against spoofing.

Top 3 Positioning Challenges in Autonomous Marine Navigation
The maritime industry is witnessing an emerging trend of navigation automation automation both in the open sea as well as inland. Find out more...

Insight article: Set adrift by GPS jamming
GPS receivers have established themselves as a critical element in many offshore and nearshore applications.