A Mathematical Model for Optimal Communication Scheduling between Multiple Satellites and Multiple Ground Stations

• 영문명: 다수의 인공위성-지상국 간 통신 스케줄 최적화 모형
• 발행기관: 한국산업경영시스템학회
• 저자명: Eugine Jeong(정유진) Heungseob Kim(김흥섭)
• 간행물 정보: 『산업경영시스템학회지』제41권 제1호, 39~49쪽, 전체 11쪽
• 주제분류: 경제경영 > 경영학
• 파일형태: PDF
• 발행일자: 2018.03.30

영문 초록

In the satellite operation phase, a ground station should continuously monitor the status of the satellite and sends out a tasking order, and a satellite should transmit data acquired in the space to the Earth. Therefore, the communication between the satellites and the ground stations is essential. However, a satellite and a ground station located in a specific region on Earth can be connected for a limited time because the satellite is continuously orbiting the Earth, and the communication between satellites and ground stations is only possible on a one-to-one basis. That is, one satellite can not communicate with plural ground stations, and one ground station can communicate with plural satellites concurrently. For such reasons, the efficiency of the communication schedule directly affects the utilization of the satellites. Thus, in this research, considering aforementioned unique situations of spacial communication, the mixed integer programming (MIP) model for the optimal communication planning between multiple satellites and multiple ground stations (MS-MG) is proposed. Furthermore, some numerical experiments are performed to verify and validate the mathematical model. The practical example for them is constructed based on the information of existing satellites and ground stations. The communicable time slots between them were obtained by STK (System Tool Kit), which is a well known professional software for space flight simulation. In the MIP model for the MS-MG problems, the objective function is also considered the minimization of communication cost, and ILOG CPLEX software searches the optimal schedule. Furthermore, it is confirmed that this study can be applied to the location selection of the ground stations.

목차

1. 서 론

2. 문제정의 및 수리모형

3. 수치실험 및 결과

4. 결론 및 향후 연구방향

키워드

Satellite Communication System Multiple Satellites Scheduling Visibility Conflict Mixed Integer Programming