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Research and Development into Advanced Approach and Landing Operations Utilizing GBAS

Satellite navigation based on Global Navigation Satellite System (GNSS) is used to an ever-increasing extent in aircraft operations. The Ground-Based Augmentation System (GBAS) supports safe approach and landing, even under weather conditions of low visibility. As well as additional information to enhance the reliability of GNSS satellite signals, its ground facility also broadcasts data blocks on approach paths. When the GBAS is compared with a conventional instrument landing system (ILS), the prominent advantages of GBAS include not only scope to support precision approaches with multiple approach paths but also eliminating the need for protection areas of ILS radio waves on runways, which might improve runway throughput. Leveraging these advantages could allow more flexible approach and landing operations and reduce environmental loads. For example, benefits such as reducing fuel consumption and noise, and enhancing the capacity of congested airports are expected.
 ENRI is conducting a research and development program to support the entire approach and landing phase, from selecting the approach path in the initial precision approach phase to the runway exit in the final landing phase. Our goals include developing concept of operations (CONOPs), clarifying their operational constraints for the advanced approach and landing with increased glide path angles, the secondary touchdown point on the same runway in addition to the ordinary approach path. Key subjects of the program include improving the collision risk model (CRM) required to design and evaluate the advanced approach paths safely, conceptual development of pilot support tools and various simulation-based experiments to evaluate how runway throughput can be further streamlined via advanced operations.

Research Group
(staff)
Takayuki YOSHIHARAShinji SAITOHRyota MORI
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