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| Development of a Ground Based Augmentation System |
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When applying satellite navigation systems for aviation, there is a case that its performance is insufficient to satisfy the accuracy and
availability requirements for provision of the precision approach and landing services. Ground-Based Augmentation System (GBAS) is a promising candidate that enables the precision approach and
landing under the various meteorological conditions even up to CAT-II/III in addition to CAT-I. GBAS is able to satisfy the higher categories of accuracy and availability requirements
by transmitting the augmentation information from the ground station to the aircrafts ready to land in the airport.
ENRI is conducting various researches and developments in this field, i.e. research of the definitions of performance requirement for operational GBAS,
development of new algorithms to produce highly reliable augmentation information, and development of a telecommunication method to deliver augmentation information from the ground.
ENRI is also working with ICAO closely in developing the international standards for a GNSS landing system,
focusing on the system implementation that is suitable for Japanese geographical characteristics.
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