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- W1555113383 abstract "본 연구에서는 타원궤도상에서 위성의 편대비행을 유지하기 위하여 필요한 포기조건을 결정하고자 한다. 타원궤도일 경우 Hill 방정식으로는 위성간의 상대운동을 기술할 수 없기 때문에, Hill 방정식의 초기조건에 비선형성과 이심률에 대한 보정을 하여 얻은 새로운 운동방정식을 사용했다. 편대비행에서 상대적 거리를 유지하기 위하여 주위성과 부위성의 평균각속도를 일치시키는 구속조건을 이용했다. 이 구속조건은 J2 섭동항을 고려한 것이므로, 이 구속조건을 만족하는 편대비행의 초기조건은 타원궤도에서의 위성편대비행을 유지하는데 잘 적용될 수 있다. 타원궤도에서의 상대운동방정식 초기조건에 J2 섭동을 고려한 구속조건을 적용할 때, 이심률이 0.05 이하이고 위성간의 상대거리가 0.5km 정도인 경우만이 주기적으로 일정하게 간격이 유지되는 결과를 얻을 수 있다. 따라서 이심률이 크지 않은 타원궤도에서는 평균각속도 일치의 구속조건을 사용하여 위성간의 상대거리를 유지할 수 있었다. 이러한 결과를 이용하여 타원궤도에서의 위성편대비행을 위한 효율적인 초기조건을 제공할 수 있고, 위성편대비행의 운용에 있어서 비용을 절감할 수 있는 방법을 제시할 수 있다. The initial conditions that generate bounded motion in eccentric reference orbit are determined for satellite formation flying. Because Hill's equations cannot describe the relative motion between two satellites in eccentric orbit, a new relative dynamics utilizing the nonlinearity and eccentricity correction for Hill's initial conditions is implemented. The constraint that matches angular rates of chief and deputy satellites is used to obtain the bounded motion between them. The constraint can be applied to satellite formation motions in eccentric orbit, since it implicates J2 perturbation due to the central body's aspherical gravitational forces. The periodic bounded motions are analyzed for the orbit with the eccentricity of less than 0.05 and about 0.5 km relative distance between chief and deputy satellites. It is mainly illustrated that the satellite formations in small eccentric orbits can have hounded motions; consequently, the formation can be kept by matching angular rates of the satellites. These results demonstrate an useful method that reduces the cost for operating satellites by providing effective initial conditions for satellite formation flying in eccentric orbit." @default.
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- W1555113383 date "2005-03-01" @default.
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- W1555113383 title "DETERMINATION OF INITIAL CONDITIONS FOR SATELLITE FORMATION ELYING IN ELLIPTICAL ORBITS" @default.
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- W1555113383 doi "https://doi.org/10.5140/jass.2005.22.1.021" @default.
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