Uplink interference mitigation technology for NGSO constellation systems based on optimal spatial isolation Angle

In this paper, we study the frequency coexistence problem between NGSO constellation systems of global distributed earth stations, and propose a specific method to mitigate uplink interference of NGSO constellation systems by optimizing the access strategy of earth stations to achieve the optimal spatial isolation Angle, and find the optimal spatial isolation Angle by solving a nonlinear programming problem. Simulation results show that the proposed method reduces the cumulative probability of harmful interference time between NGSO constellation systems while ensuring the received signal level.