The main activity of EUROCAE WG-28 is the development of standards for Ground Based Augmentation Systems (GBAS). The working group considers emerging GBAS technologies and applications whilst being cognizant of the aviation developments in these fields.
The group focusses on new technologies in the GBAS domain, and aims to develop standards for related systems.
The developed ED-114B ground MOPS that includes the GAST D elements, is considered a stepping stone to more advanced and robust GBAS systems, it being DFMC GBAS based on GPS and Galileo. The ongoing standardisation activity within ICAO NSP considers backwards compatibility to complete the GAST C and GAST D concepts with a DFMC GBAS concept supporting CAT III operations, based on resilient signal processing, including against ionospheric disturbances, radio frequency interference, single constellation limitations and enhancing cyber resilience. The new concept is monikered GAST E. This new concept may be able to, in addition to traditional precision approaches down to CAT III, serve new entrants and new operations.
| ED-114 | MOPS for global navigation satellite ground based augmentation system ground equipment to support category I operations | Superseded | Date of Publication: 01/09/2003 |
| ED-114A | MINIMUM OPERATIONAL PERFORMANCE SPECIFICATION FOR GLOBAL NAVIGATION SATELLITE GROUND BASED AUGMENTA | Superseded | Date of Publication: 12/03/2013 |
| ED-114A Ch. 1 | MOPS For Global Navigation Satellite Ground Based Augmentation System Ground Equipment To Support Category I Operations | Superseded | Date of Publication: 05/10/2017 |
| ED-114B | MOPS For Global Navigation Satellite Ground Based Augmentation System Ground Equipment To Support Precision Approach and Landing | Published | Date of Publication: 27/09/2019 |
| ED-114B Change 1 Corr 1 | MOPS Global Navigation Satellite GBAS Ground Equipment to support Precision Approach and Landing - with Corrigendum 1 | Published | Date of Publication: 31/07/2024 |
| ED-114B change1 | MOPS Global Navigation Satellite GBAS Ground Equipment to support Precision Approach and Landing | Published | Date of Publication: 07/11/2022 |
| ED-114C | MOPS For Global Navigation Satellite Ground Based Augmentation System Ground Equipment To Support Precision Approach And Landing | Draft | Target Publication Date: 30/06/2031 |
| ED-72 | MOPS for airborne GPS receiving equipment | Superseded | Date of Publication: 01/04/1992 |
| ED-72A | MOPS for airborne GPS receiving equipment used for supplemental means of navigation | Published | Date of Publication: 01/04/1997 |
| ED-95 | MASPS for a global navigation satellite system ground based augmentation system to support Cat 1 operations | Published | Date of Publication: 01/10/1999 |
| EUR 239-25 / WG28-480 DP005 Internal Report | Preliminary material for future Multi-Constellation Multi-Frequency GBAS MOPS | Published | Date of Publication: 31/12/2024 |
