AAS 98-198

CONTROL OF SPACE STATION AND ITS ADJOINT ORBITER USING RELATIVE DGPS

Jianping Yuan, Jianjun Luo, Xiaomu Dou, Zhongyuan Tian - Northwestern Polytechnical University, P. R. China

Abstract

The control of space station and its adjoint orbiter is theoretically the control of relative motion of two or more space vehicles, including relative dynamics, relative kinematics, and relative attitude. Relative GPS can be used for navigating a vehicle in the vicinity of its target or destination. In this paper, GPS/DGPS are introduced and relative motion of space vehicles are modeled. Relative position, relative velocity and relative attitude are represented and solved by GPS/DGPS measurements. Use of multi-antenna and carrier phase signal of GPS satellites, with relative differential GPS technique, the attitude of space station with respect to the adjoint satellite can be accurately calculated in real-time. Analysis and results are given.

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