This paper analyses the attitude measured model and presents the attitude determination algorithm of space TT&C ship (space tracking, telemetry, and command ship) based on single star sensor. Considering lower precision of rolling angel for single star sensor, we proposed an algorithm by integrating attitude determination and redundancy measure to obtain high precision ship attitude data. Aiming at the circumstance of space TT&C ship, the factors that influence the precision of attitude measured data such as the number of star, atmosphere refraction correct and installation elevation are analyzed, which this can provide valuable references to the engineering design for star sensor used on space TT&C ship.
Based on the analysis of influence factors for hull deformation data, physical models including hull curve deformation, hull torsion deformation and hull athletics deformation were established according to mechanical principle. Considering characteristics of the space instrumentation ship, systems errors identification method based on total variation constrained was provided. First order differential coefficient of deformation data was joined in a constrained equation in the method. Systems errors coefficient and exact value of deformation data were solved through alternating iterations. The simulation result of deformation measured data indicated that identification errors were in consistent with plus errors, and systems errors coefficient was also estimated accurately. This demonstrated that the proposed method is suitable for systems errors identification of hull deformation data.
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