Research on Power Control Algorithm in the Multi-target TT&C System

In the multi-target TT&C system of relay satellite, due to the different distances between users and satellites, the strong signals of near users will restrain the weak signals of long-distance users and reduce the system capacity. This paper studies the power control algorithm in the reverse link of multi-target TT&C system. Specifically, the signal model of multi-target TT&C system is established, and two power adjustment algorithms, namely fixed step adjustment algorithm and adaptive step adjustment algorithm, are analyzed. The adaptive step adjustment algorithm is improved, and the upper limit of step adjustment is introduced. The simulation results show that the algorithm is effective in multi-target TT&C system.