Interference Prediction between LEO Constellations based on A Novel Joint Prediction Model of Atmospheric Attenuation

This paper proposes a novel joint prediction model of atmospheric attenuation for the accurate interference prediction of low earth orbit (LEO) constellation systems. Firstly, a total atmospheric attenuation joint prediction model based on the actual satellite link elevation angles is defined. Secondly, we apply the elevation-based total atmospheric attenuation joint prediction model to the interference analysis of LEO constellation systems in the downlink direction, and the modified analytical expression of interference evaluation indicator Delta T/T based on the proposed model is also derived. Finally, we select OneWeb and GW satellite systems for simulation to verify the accuracy and efficiency of the proposed model in this paper. The results show that the elevation-based total atmospheric attenuation joint prediction model can provide more accurate interference prediction results than the existing attenuation prediction models, while the simulation time overhead reduce by 93.78%. Furthermore, the results indicate that in order to accurately predict the interference between LEO constellation systems, the total atmospheric attenuation cannot be ignored.