Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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GRASP Algorithm for Dynamic Weapon-Target Assignment Problem

동적 무장할당 문제에서의 GRASP 알고리즘 연구

  • Received : 2019.08.19
  • Accepted : 2019.10.31
  • Published : 2019.12.01
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Abstract

The weapon-target assignment (WTA) problem is a matter of effectively allocating weapons to a number of threats. The WTA in a rapidly changing dynamic environment of engagement must take into account both of properties of the threat and the weapon and the effect of the previous decision. We propose a method of applying the Greedy Randomized Adaptive Search Procedure (GRASP) algorithm, a kind of meta-heuristic method, to derive optimal solution for a dynamic WTA problem. Firstly, we define a dynamic WTA problem and formulate a mathematical model for applying the algorithm. For the purpose of the assignment strategy, the objective function is defined and time-varying constraints are considered. The dynamic WTA problem is then solved by applying the GRASP algorithm. The optimal solution characteristics of the formalized dynamic WTA problem are analyzed through the simulation, and the algorithm performance is verified via the Monte-Carlo simulation.

무장할당(Weapon-Target Assignment, WTA) 문제는 다수 위협과 다종의 무장을 효과적으로 할당하는 문제이다. 실제 급변하는 교전환경에서의 무장할당은 위협과 무장의 특성과 위협-무장 선정에 따른 영향성을 모두 고려해야한다. 본 논문에서는 동적 무장할당 문제에서의 최적해 도출을 위해 메타휴리스틱 방법의 일종인 Greedy Randomized Adaptive Search Procedure (GRASP) 알고리즘 적용 방안을 제안한다. 먼저 동적 무장할당 문제를 정의하고 알고리즘 적용을 위해 수학적 모델을 정식화한다. 무장할당 전략을 수립하기 위하여 목적함수를 정의하고 시간변화를 고려한 구속조건을 설정한다. 이를 바탕으로 GRASP 알고리즘을 동적 무장할당 문제에 적용한다. 교전 시뮬레이션을 통해 정식화한 무장할당 문제의 최적해 특성을 분석하며, Monte-Carlo 시뮬레이션을 통해 알고리즘 성능 검증을 수행한다.

Keywords

References

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