EDG2E - Equipment for Dual frequency Galileo GPS and EGNOS

The EDG²E project (Equipment for Dual frequency Galileo GPS and EGNOS) is an initiative by the EUSPA aimed at developing a next-generation dual-frequency multi- constellation receiver for enhanced navigation capabilities in civil aviation. This project is crucial in supporting the launch adoption of the Galileo satellite constellation signals in the civil aviation market. The primary goal is to make navigation safer and more precise by equipping aircraft with the EDG²E receiver in the comingdecade.

As the cornerstone of satellite-based navigation, this GNSS receiver will utilize signals from both European Galileo and US GPS positioning systems, augmented by the SBAS multi-constellation EGNOS. The EDG²E project aims to provide aircraft navigation systems with improved accuracy, better availability, and enhanced positioning integrity, benefits that can be extended to all safety-critical sectors to improve operationalsafety and efficiency.

The scope of the EDG²E project encompasses the development of a prototype receiver that will set new standards for GNSS receivers. This advanced receiver is designed to have a minimal footprint on board while offering more powerful computing capabilities. The project's scope extends beyond just aircraft, covering various applications including airplanes, helicopters, and could possibly even be considered for rail systems in the future. For airplanes and helicopters, the EDG²E receiver will enable new approach and landing operations with lower decision heights within the current Performance-Based (PBN) Navigation scope. The project outcomes could be used in the future support the rail signaling systems, supporting the evolution towards GNSS-based continuous positioning systems (ERTMS level 3) to replace current non-continuous positioning systems that rely on track-side sensors.

Challenge and technical solution

The primary challenge addressed by the EDG²E project is the need for more accurate, available, and reliable navigation systems. The technical solution involves developing a dual-frequency multi-constellation receiver that leverages both Galileo and GPS signals, augmented by EGNOS. This approach allows for enhanced navigation capabilities in demanding environments, such as the challenging reception conditions for rail systems. The EDG²E receiver is designed to provide immediate performance improvements in terms of accuracy, availability, and integrity, which are crucial for safety-critical applications. By supporting standardization and certification preparation, the project aims to ensure that the new receiver technology meets civil aviation regulatory requirements and can be widely adopted. The minimal footprint and increased computing power of the EDG²E receiver represent advancement, a significant allowing for technical improved navigation performance without adding substantial weight or complexity to the aircraft or other vehicles. Rigorous in-flight testing has confirmed the technology's ability to deliver enhanced safety and reliability, marking a significant step forward in aviation navigation capabilities.