한국형 위성항법시스템을 위한 위성군집궤도 최적 설계
Optimal Satellite Constellation Design for Korean Navigation Satellite System
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
NSS (Navigation satellite system) provides the information for determining the position, velocity and time of users in real time using satellite-networking, and is classified into GNSS (Global NSS) and RNSS (Regional NSS). Although GNSS services for global users, the exactitude of provided information is dissatisfied with the degree required in modern systems such as unmanned system, autonomous navigation system for aircraft, ship and others, air-traffic control system. Especially, due to concern about the monopoly status of the countries operating it, some other countries have already considered establishing RNSS. The RNSS services for users within a specific area, however, it not only gives more precise information than those from GNSS, but also can be operated independently from the NSS of other countries. Thus, for Korean RNSS, this paper suggests the methodology to design the satellite constellation considering the regional features of Korean Peninsula. It intends to determine the orbits and the arrangement of navigation satellites for minimizing PDOP (Position dilution of precision). PGA (Parallel Genetic Algorithm) geared to solve this nonlinear optimization problem is proposed and STK (System tool kit) software is used for simulating their space flight. The PGA is composed of several GAs and iterates the process that they search the solution for a problem during the pre-specified generations, and then mutually exchange the superior solutions investigated by each GA. Numerical experiments were performed with increasing from four to seven satellites for Korean RNSS. When the RNSS was established by seven satellites, the time ratio that PDOP was measured to less than 5 (i.e. better than ‘Good’ level on the meaning of the PDOP value) was found to 94.3% and PDOP was always kept at 10 or less (i.e. better than ‘Moderate’ level).
Abstract
NSS (Navigation satellite system) provides the information for determining the position, velocity and time of users in real time using satellite-networking, and is classified into GNSS (Global NSS) and RNSS (Regional NSS). Although GNSS services for global users, the exactitude of provided information is dissatisfied with the degree required in modern systems such as unmanned system, autonomous navigation system for aircraft, ship and others, air-traffic control system. Especially, due to concern about the monopoly status of the countries operating it, some other countries have already considered establishing RNSS. The RNSS services for users within a specific area, however, it not only gives more precise information than those from GNSS, but also can be operated independently from the NSS of other countries. Thus, for Korean RNSS, this paper suggests the methodology to design the satellite constellation considering the regional features of Korean Peninsula. It intends to determine the orbits and the arrangement of navigation satellites for minimizing PDOP (Position dilution of precision). PGA (Parallel Genetic Algorithm) geared to solve this nonlinear optimization problem is proposed and STK (System tool kit) software is used for simulating their space flight. The PGA is composed of several GAs and iterates the process that they search the solution for a problem during the pre-specified generations, and then mutually exchange the superior solutions investigated by each GA. Numerical experiments were performed with increasing from four to seven satellites for Korean RNSS. When the RNSS was established by seven satellites, the time ratio that PDOP was measured to less than 5 (i.e. better than ‘Good’ level on the meaning of the PDOP value) was found to 94.3% and PDOP was always kept at 10 or less (i.e. better than ‘Moderate’ level).
참고문헌 (17)
- Agrawal, V., "Satellite technology : principles and applications" (2011), John Wiley & Sons
- Bate, R.R., "Fundamentals of astrodynamics" (1971), Courier Corporation
- Choi, J.M., "Preliminary Study on Orbit Determination of Korea Satellite Navigation System with Inter-Satellite Ranging", Proceedings of the Korean Society For Aeronautical And Space Sciences, pp.483~486 (2013)
- Choi, M.S., "Korean Navigation Satellite System Orbit Design and Navigation Performance Analysis", Proceedings of the Korean Society For Aeronautical And Space Sciences, pp.645~649 (2013)
- 김흥섭, "인공위성 시스템의 신뢰도 최적 설계에 관한 연구(아리랑위성 2호의 MSC 시스템 구조를 중심으로)", 한국항공우주학회지, 39(12), pp.1150~1159 (2011), 한국항공우주학회
- Langley, R.B., "Dilution of precision", GPS world, 10(5), pp.52~59 (1999)
- Larsen, W. J., "Space mission analysis and design, Microcosm" (1992), Microcosm, Inc. and Kluwer Academic Publishers
- 이상현, "한국형 지역 위성 통신항법시스템의 위성 궤도설계에 관한 연구", 한국항공우주학회지, 33(7), pp.51~58 (2005), 한국항공우주학회
- 이영인, "입자 군집 최적화 방법론을 이용한 효율적 위성임무 일정 수립에 관한 연구", 산업경영시스템학회지, 39(1), pp.56~63 (2016), 한국산업경영시스템학회
- ICT and Future planning, Mediumand long-term plan for space exploration, "Ministry of Science", ~ (2014)
- Misra, P., "GPS performance in navigation", Proceedings of the IEEE, 87(1), pp.65~85 (1999)
- 박지호, "위성항법시스템기반의 위치오차에 관한 연구", 전자공학회논문지, 49(10), pp.23~33 (2012), 대한전자공학회
- Parkinson, B.W., "Progress in Astronautics and Aeronautics : Global Positioning System : Theory and Applications (Vol. 2)" (1996), AIAA
- Shin, M.J., "Orbit Design of a Satellite Navigation System for East Asia Region", Proceedings of the Korean Society For Aeronautical And Space Sciences, pp.173~176 (2000)
- 임동순, "셀룰러 네트워크에서 셀-스위치 할당문제를 위한 유전자 알고리듬", 대한설비관리학회지, 10(1), pp.91~102 (2005), 대한설비관리학회
- Yum, J. K., "A Study of D-Optimal Design in Nonlinear Model Using the Genetic Algorithm", Journal of The Korean Society for Quality Management, 28(2), pp.135~146 (2000)