| 摘要 |
PROBLEM TO BE SOLVED: To obtain an extremely accurate flight posture data by calculating the estimated link vector between the first and the second space crafts, obtaining the measured link vector based on the link connecting the both space crafts, and determining the posture of the first space craft in accordance with the difference between the estimated and measured link vectors. SOLUTION: In order to establish an interplanetary link between two space crafts, a mechanical interface 26 that provides a coordinate system from which the pointing angle can be referenced is provided as well as a receiver unit 22 that receives communications data according to the beams received along the interplanetary link by means of a remote-control terminal. Furthermore, an emitter unit 20 for emission of communications data to the remote-control terminal as emitting beams is provided as well as an operation unit 14 to operate the receiving and emitting beams at the pointing angle that is referred in the interface 26. Accordingly, actual pointing angle in this operating means 14 is measured with a measurement unit 18, which is compared with the coordinate system to control the posture of the space craft.
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