Abstract

The AsteRx-m3 Pro provides centimeter-level RTK positioning and precise heading sensing capabilities for marine navigation. Its GNSS+ technology suite (AIM+, APME+, LOCK+, IONO+) ensures signal stability in complex maritime environments. Featuring a 544-channel full-band design, it supports various navigation signals and offers optional single/dual antenna configurations, capable of outputting precise heading, pitch, and roll angle information. A 10 Hz update rate and <10 ms low latency adapt to dynamic marine navigation scenarios. With its ultra-compact size, lightweight construction, and ultra-low power consumption, the AsteRx-m3 Pro perfectly meets the installation and long-term operation requirements of marine navigation systems. Thanks to its exceptional reliability and environmental adaptability, it has become an excellent choice for high-precision marine navigation.

AI Q&A

What kind of GNSS receiver should be chosen for marine navigation?

The AsteRx-m3 Pro is the ideal choice. It boasts centimeter-level RTK accuracy, precise heading output, industry-leading anti-jamming and anti-spoofing capabilities, and excellent SwaP (Size, Weight, and Power) performance. Supporting single/dual antenna configurations, it can adapt to complex maritime environments and perfectly fit various marine navigation systems.

Why does marine navigation require centimeter-level GNSS accuracy?

Centimeter-level accuracy is the core foundation for ensuring precise obstacle avoidance, route planning, berthing operations, and accurate positioning in marine exploration. It directly impacts navigation safety, operational efficiency, and navigation cost control, serving as a key enabler for modern marine navigation systems to achieve intelligent and precise operation.

What role does AIM+ technology play in marine navigation?

AIM+ effectively suppresses intentional jamming signals (including maritime electromagnetic interference, narrowband/wideband, and chirp jamming) and spoofing signals, ensuring the continuous stability of GNSS signals for ships in complex electromagnetic environments. It guarantees uninterrupted navigation and accurate positioning, enhancing navigation safety and task continuity.

How does the AsteRx-m3 Pro maintain stable positioning in complex maritime environments with strong winds, huge waves, and multiple interferences?

The AsteRx-m3 Pro leverages a full-system multi-band redundant design, APME+ for suppressing sea surface reflected signals, AIM+ for anti-jamming and anti-spoofing, high-sensitivity fast reacquisition (1 second on average), and LOCK+ for vibration and shock-resistant tracking. Combined with precise heading output, it continuously provides stable and reliable centimeter-level positioning and heading data in harsh maritime environments with strong winds, huge waves, and multiple interferences, ensuring ships sail without yaw and positioning without drift.

High-Precision GNSS Technology Empowers Modern Marine Navigation

Modern marine navigation has evolved from traditional basic positioning into an integrated navigation system integrating precise navigation, intelligent obstacle avoidance, berthing assistance, and marine operation positioning. With the increasing density of maritime traffic and the growing complexity of marine operation scenarios, requirements for navigation accuracy, signal reliability, and environmental adaptability have continuously risen. Traditional navigation solutions can no longer meet the high-dynamic, high-precision navigation needs of ships. Equipped with full-band support, advanced anti-jamming technology, precise heading output, and strong environmental adaptability, the AsteRx-m3 Pro has emerged as a core solution for high-precision modern marine navigation.

Why Centimeter-Level GNSS Accuracy Is Critical for Marine Navigation?

In scenarios such as navigation in narrow waterways, close-quarters ship meeting, port berthing, offshore wind power inspection, and marine exploration, even minor positioning deviations may lead to ship collisions, route deviations, and operational errors, resulting in safety accidents and economic losses. High-precision spatiotemporal data and accurate heading information are the foundation for ships to achieve intelligent navigation, safe sailing, and efficient operations, directly determining the operational capabilities and application value of marine navigation systems.

Core Advantages of the AsteRx-m3 Pro GNSS Receiver?

The AsteRx-m3 Pro is not only a high-performance GNSS receiver but also a tailored high-precision positioning and heading sensing solution for marine navigation scenarios. Its design philosophy perfectly aligns with the stringent requirements of marine navigation for size, weight, power consumption, and performance.

Full-System and Full-Band GNSS Performance

Despite its compact dimensions of 47.5×70×9.32 mm and lightweight of 27 g, the AsteRx-m3 Pro offers:

-544 hardware channels supporting simultaneous tracking of all visible satellite signals, ensuring signal acquisition capability in the open maritime environment.

-Full constellation support: GPS, BeiDou, Galileo, GLONASS, QZSS, NavIC, and SBAS (EGNOS, WAAS, GAGAN, MSAS, SDCM), with multi-system redundancy enhancing positioning reliability.

-Multi-band reception covering full-frequency signals such as GPS L1/L2/L5 and BeiDou B1I/B1C/B2a/B2b/B2I/B3I, improving signal stability under complex sea conditions.

-Support for the OSNMA signal security standard, enhancing the credibility of positioning and heading data to ensure navigation safety.

GNSS+ Technology Ensures Stable Performance Under Complex Sea Conditions

Septentrio’s exclusive GNSS+ technology suite guarantees high-precision positioning and heading sensing for ships in complex environments with strong interference, multipath effects, and high vibrations:

-AIM+: Industry-leading anti-jamming and anti-spoofing technology to effectively counter maritime electromagnetic interference, intentional jamming, and spoofed signals.

-APME+: A posteriori multipath estimator that suppresses the impact of reflected signals from the sea surface, ship structures, etc., on positioning.

-LOCK+: Maintains stable tracking during ship swaying and vibration, adapting to high-dynamic navigation needs.

-IONO+: Advanced ionospheric disturbance mitigation technology to ensure positioning reliability for long-distance maritime navigation and all-weather operations.

These technologies collectively achieve continuous centimeter-level RTK accuracy and precise attitude output:

Positioning accuracy:

-Horizontal 0.6 cm + 0.5 ppm, Vertical 1.0 cm + 1 ppm.

-Attitude accuracy (1 m antenna separation): Heading 0.15°, Pitch/Roll 0.25°; (5 m antenna separation): Heading 0.03°, Pitch/Roll 0.05°.

-Supports single/dual antenna configurations, eliminating the need for ship dynamics and dependence on geomagnetic sensors, simplifying installation and calibration processes.

Integration Advantages of the AsteRx-m3 Pro in Marine Navigation Systems

High-Frequency Update and Low-Latency Response

The AsteRx-m3 Pro supports a 10 Hz update rate for positioning and heading data, paired with <10 ms low latency. This ensures synchronization between navigation commands and precise coordinate/heading data for ships in high-speed navigation, emergency obstacle avoidance, and other scenarios, adapting to dynamic navigation and real-time decision-making needs.

Precise Navigation and Operational Data Collection

In applications such as precise ship navigation, berthing assistance, and marine operation positioning, its high-precision positioning and heading data provide a stable benchmark for navigation systems, significantly improving navigation accuracy and operational reliability. Meanwhile, it offers traceable spatiotemporal basis for navigation logs and operational data, meeting compliance requirements.

High Efficiency and Long-Term Operation Support

Fast RTK initialization (<7 seconds) improves ship departure response speed and reduces waiting time.

Ultra-low power consumption design: Only 750 mW in GPS L1/L2 mode and 1000 mW in full-constellation, full-signal mode, reducing ship power supply load and adapting to long-term continuous navigation needs.

Strong Marine Environmental Adaptability

Operating temperature range of -40°C to +85°C and storage temperature range of -55°C to +85°C, adapting to extreme temperature environments such as Arctic/Antarctic routes and tropical sea areas.

Complies with the MIL-STD-810G vibration resistance standard, withstanding ship swaying and shock to ensure stable operation during navigation.

Adapts to 5% – 95% non-condensing humidity, resisting erosion from high-humidity maritime environments and extending equipment service life.

AsteRx-m3 Pro: The Precise Spatiotemporal Foundation for Marine Navigation

Enhancing Navigation Safety and Operational Reliability

Marine navigation systems equipped with the AsteRx-m3 Pro can provide highly credible spatiotemporal data and heading information, enhancing the scientificity and accuracy of route planning, obstacle avoidance decisions, and operational positioning, while reducing navigation risks and operational errors.

Easy Integration and Comprehensive Development Ecosystem

Comprehensive interface support: 4 high-speed serial ports (LVTTL), 1 USB device port, Ethernet port (TCP/IP, UDP, 10/100 Mbps), xPPS output (up to 100 Hz), etc., perfectly matching the connection requirements of marine navigation systems

Complete protocol compatibility: Supports Septentrio Binary Format (SBF), NMEA 0183 (v3.01, v4.0), RTCM v2.x/v3.x (including MSM messages), CMR v2.0/CMR+, etc., ensuring seamless integration with existing marine navigation equipment

Rich development tools: Provides RxTools graphical tool (supporting configuration, monitoring, data analysis, and conversion) and SDK libraries (supporting Windows and Linux systems, compatible with PPK offline processing), significantly reducing the integration and development cycle with marine navigation systems

Future-Oriented Navigation Technology Investment

Choosing the AsteRx-m3 Pro means providing ships with long-term stable and technologically advanced positioning and heading sensing capabilities. Its full-band design supports current and future navigation signals, and its strong compatibility ensures long-term upgrade adaptation with marine navigation systems, providing sufficient space for subsequent intelligent navigation function expansion.