Ground Based Augmentation System (GBAS) VHF ground-air Data Broadcast (VDB); Technical characteristics and methods of measurement forground-based equipment; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
The present document applies to VDB ground-air digital broadcast using Differential Eight Phase Shift Keying(D8PSK) of Ground-Based Augmentation System GBAS, intended for channel increments of 25 kHz. The VDB systemprovides data broadcast from ground base