GNSS based augmentation systems aviation perspective and vision for Turkey

Technological achievements and cutting-edge methods in the last few decades, lead to a new era for aircraft approach and landing systems in parallel. Terrestrial radio-navigation systems used for takeoff, en-route navigation and landing of civilian and military planes in the world, such as VHF omni-directional range, instrument landing systems (ILS), etc. will be modernized with new systems using satellite signals in mid and long term. For en-route navigation and non-precision approach operations stand alone GNSS usage is widely preferred. But for the “precision or precision-like approach and landing” where stand alone GNSS usage is not adequate to provide the performance requirements, GNSS based approach and landing systems namely the ground based augmentation system (GBAS) and satellite based augmentation system (SBAS) stand as the promising technologies. In this paper, a general overview of the SBAS and GBAS systems are given in terms of architecture, operational advantages and the other major application areas with a focus of GNSS usage and the need for the augmentation systems in aviation. In this paper, World roadmap for GNSS based augmentation systems is evaluated among with a short list of “To Do”s for Turkey with a vision for Turkey's roadmap.