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Because of the limitation caused by the number of visible BDS (BeiDou Navigation Satellite System) / GPS (Global Position System) satellites, the application of BDS/GPS on the spacecraft is different from the ground user. In this paper, the coverage performance model of BDS/GPS is established by taking the radiation angle of transmitting antenna, the elevation of receiver and the received signal strength...
The online estimation of spacecraft center of mass (CM) plays an important role in the attitude and orbit control law design of large variety mass property spacecraft. Based on spacecraft motion equation, the method of using one point three orientations acceleration together with gyro information to estimate CM was discussed, the main error source and requirement of angle velocity was analysis. Then,...
Planning of Tracking and data relay satellite is a important problem which focuses much attention recently. Based on the analysis of operation planning for tracking and data relay satellite (TDRS), a new approach of modeling of operation planning based on state and action models is proposed, which has powerful representation capabilities compared with traditional planning approach. The domain knowledge...
According to the problem of attitude control for variable-bend-tail vehicle, the mathematics models are established and the robust attitude control system is proposed based on variable structure control theory. The movement model of the bend tail section is derived from considering the coupling mutual action between tail and front of vehicle, and the nonlinear mathematics dynamic model of variable-bend-tail...
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