To improve the resilience, integrity and availability for the next generation of commercial navigation systems, Collins Aerospace is collaborating with the European Agency for Space Programme (EUSPA). The Multi-mode Global Positioning System and Galileo (MUGG) project focuses on dual frequency, multi-constellation (DFMC), satellite-based augmentation system (SBAS) receiver development, standardization and certification.

Working with PildoLabs, a leading provider of Global Navigation Satellite System (GNSS) and flight test solutions, the MUGG project actively supports future civil aviation GNSS receivers implemented through a prototype developed to validate the latest EUROCAE ED-259 – minimum operational performance standards (MOPS) for Galileo/GPS/SBAS airborne equipment – through in-flight demonstration of the enhanced capabilities.

MUGG prototype – advanced, multi-mode receiver

The MUGG receiver prototype, also known as the GLU-2100, receives signals from multiple satellite constellations, namely GPS and Galileo. It improves positioning performance through advanced receiver, autonomous integrity monitoring (ARAIM) and DFMC, SBAS software. ARAIM aligns SBAS on legacy L1 or DFMC, SBAS service.

Adding DFMC capabilities to the GLU-2100 results in significant improvement in air navigation. DFMC, SBAS enables performance-based navigation (PBN), which is becoming the global standard for navigation. PBN helps reduce complex cross-border operations, eliminating the constraints of ground-based, sensor-specific routes and procedures.

The MUGG receiver contributed to the validation of the ED-259A MOPS and will be further used to support validation of the ED-259B MOPS under development within the joint EUROCAE WG-62/RTCA SC-159 working group.

Aircraft communication signals

DFMC, SBAS benefits for future aviation receivers

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Improved accuracy

Dual frequency signals improve accuracy over traditional SBAS
envionmental impact

Improved integrity

Advanced RAIM algorithms improve integrity over traditional SBAS
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Increased availability

Multiple satellite constellations provide increased availability over traditional SBAS
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Reduced multipath interference

Frequency diversity increases robustness to multipath and interferences

MUGG project PBN outcomes

  • Reduced diversions and delays due to navigation errors.
  • Improved precision approaches and landings.
  • Increased capacity for air traffic control.
  • Reduced fuel consumption.

Successful in-flight demonstration campaign

In 2024, PildoLabs completed a successful in-flight demonstration campaign for the MUGG project. The campaign tested the MUGG receiver in a variety of flight conditions using various flight plans in varying latitudes and RNP0.3 approaches down to LNAV minima, weather conditions and aircraft types. The receiver performed as expected in all conditions, demonstrating its safety and reliability, and confirming the benefits from DFMC, SBAS.

Committed to air travel safety

With our commitment to current and future air travel safety, the MUGG project continues to pursue precision navigation excellence adapting technology and performing flight trials.

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