UrsaNav® UN-330 ASF Measurement Unit for eLoran Mapping
General Overview of the UN-330 ASF Measurement Unit
The UN-330 ASF Measurement Unit is a specialized eLoran measurement unit engineered to collect, record, and process data essential for Additional Secondary Factor (ASF) map generation. This advanced device supports the full field-to-map workflow required to improve the accuracy of eLoran positioning systems.
Equipped with two Ursa Mitigator™ OEM receiver modules, a high-precision GNSS receiver board, and a rubidium oscillator, the UN-330 interfaces via a Universal Interface Board (UIB) and a single board computer (SBC). When paired with the proper antennas and accessories, the UN-330 captures synchronized eLoran and GNSS signal data in real-time for post-processing. The data can then be exported and refined using UrsaNav® ELEGANT ASF Map Generator™ software to produce detailed ASF maps.
This robust and portable ASF Measurement Unit plays a critical role in enhancing the accuracy and performance of eLoran receivers by helping compensate for environmental and geographic signal variations.
Key Features of the UN-330
-
Versatile Antenna Compatibility: Supports both E-field and H-field eLoran antennas, as well as a GNSS antenna, for comprehensive field measurement capabilities.
-
End-to-End ASF Workflow: Enables full ASF mapping—from signal measurement to ASF map generation and deployment.
-
Precision Timing: Integrated rubidium oscillator ensures stable, traceable timing for synchronized signal recording.
-
Modular, Integrated Design: Combines two Ursa Mitigator™ OEM receivers, a GNSS board, and a Universal Interface Board, all managed via an SBC.
-
Software Integration: Seamlessly compatible with ELEGANT ASF Map Generator™ for reliable ASF map production.
UN-330 Applications
- ASF map generation for eLoran coverage areas
- Field measurement and calibration of eLoran signal propagation
- Research and development of resilient PNT solutions
- Integration testing with differential eLoran reference stations
- Terrain and infrastructure impact analysis on eLoran signal behavior
- Government and defense-grade eLoran system planning and validation
Why Choose the UN-330?
This ASF Measurement Unit is purpose-built for government agencies, research institutions, and private-sector operators engaged in eLoran system deployment, testing, and optimization. As a high-performance eLoran measurement unit, the UN-330 offers unmatched capability in capturing the critical data needed for positioning accuracy and national infrastructure resilience.
Ready to Build Better ASF Maps?
Contact us today to learn how the UN-330 ASF Measurement Unit can support your eLoran measurement and mapping needs.