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Development of a Practical Algorithm for Airport Ground Movement Routing

공항 지상이동 경로 탐색을 위한 실용 알고리즘 개발

  • Yun, Seokjae (Department of Air Transport, Transportation and Logistics, Graduate School, Korea Aerospace University) ;
  • Ku, SungKwan (Department of Aviation Leisure & Industry Management, School of Aeronautical Science, Hanseo University) ;
  • Baik, Hojong (School of Air Transport, Transportation, Logistics and Air & Space Law, Korea Aerospace University)
  • 윤석재 (한국항공대학교 대학원 항공교통물류학과) ;
  • 구성관 (한서대학교 항공학부 항공레저산업학과) ;
  • 백호종 (한국항공대학교 항공교통우주물류법학부)
  • Received : 2015.04.07
  • Accepted : 2015.04.27
  • Published : 2015.04.30

Abstract

Motivated by continuous increase in flight demand, awareness of the importance in developing ways to increase aircraft operational efficiency on the airport movement area has been raised. This paper proposes a new routing algorithm for providing the shortest path in a right time, enhancing the aircraft movement efficiency. Many researches on developing algorithms have been performed, for example, Dijkstra algorithm and $A^*$ algorithm. The Dijkstra algorithm provide optimal solution but could possibly provide it with a cost of relatively longer computation time. On the other hand, $A^*$ algorithm does not guarantee the optimality of a solution. In this paper, we suggest a Hybrid $A^*$ algorithm, incorporating both algorithms to eliminate the weaknesses. Rigorous test shows the proposed Hybrid $A^*$ algorithm may achieve shorter computing time and optimality in searching the shortest path.

지속적으로 증가하고 있는 항공수요에 따라, 공항운영 측면에서 이동지역 내 항공기 이동에 대한 효율성을 증대할 수 있는 방안의 중요성이 대두되고 있다. 본 논문은 공항 이동지역을 운항하는 항공기에게 최단경로를 적시에 제공하여 공항운영의 효율성을 증대시키기 위한 경로 탐색 알고리즘을 제시하고자 한다. 기존 문헌들에서 여러 알고리즘이 개발되었는데, 대표적으로 Dijkstra 알고리즘 $A^*$ 알고리즘이 있다. Dijkstra 알고리즘은 상대적으로 느린 연산속도로 인해 공항구조가 복합해질 경우 최단경로를 적시에 제공하기 어려울 수 있다는 단점이 있으며, $A^*$ 알고리즘은 최적성을 보장하지 못한다는 단점이 있다. 본 논문에서는 두 알고리즘을 병합하여, 각 알고리즘의 단점을 보완한 새로운 Hybrid $A^*$ 알고리즘을 제시하였다. 성능분석 결과, Hybrid $A^*$ 알고리즘은 경로탐색에 있어 빠른 연산속도와 최적성이 개선됨을 확인하였다.

Keywords

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