Chapter 6 Satellite-Ground TTC United Scheduling Methods of GNSS Constellation Based on Nodes Constraint

摘要

In this paper, targeting at the effective management of TT&C and communication system of GNSS constellation, we analyze the constraint demands of TT&C and communication scheduling from the part of autonomous navigation precision, information transmission delay and integrality. Then, the model of node satellite selection is established which satisfy the optimized aims of multi-satellite tracking and exclusive satellite-ground link constraint satisfaction. Furthermore, the improved genetic algorithm is designed, which is used to scheduled satellite-ground resources. The results show that the strategy and algorithm are improved compared with traditional method.