Countries all over the world are engaged in heated competition to develop GPS-based location data technology for national security and economic development.
The spatial, speed, direction and time data provided by a GPS are widely used already, and form part of the essential infrastructure of our daily life in both the public and private sectors.
GPS is used in diverse areas encompassing vehicle navigation, aerial and marine navigation systems, rescue and lifesaving efforts, leisure activities, and the protection of wild animals, etc.
Recently, SBAS (Satellite Based Augmentation System) was developed to enable the acquisition of ever more accurate GPS data.
SBAS, a technology capable of reducing GPS error to less than 3m, was adopted by the ICAO as the international standard system, with the goal of securing its global operation for aerial navigation from 2025.
In Korea, KARI will also lead to the development of KASS, which is the Korean model of satellite-based augmented systems (SBAS). The open service will be launched in 2020, followed by a system performance certification, and then the Safety of Life (SoL) service for aviation will be launched at in October 2022.
Once KASS data are available, the aircraft location confirmation interval should be reduced to 0.5 seconds, and aircraft positions will be identified more accurately. Moreover, it will be possible to share the location data of all navigating aircraft so as to prevent air collision, and it is expected to enable tracking of an aircraft’s location at the time of an accident.