Determining Allowed Positions of Aeronautical-Earth Station in Motion (A-ESIM) Prevent its Frequency Interference in the Fixed Ground Station

Abstract

Aeronautical-ESIM (A-ESIM) provides a satellite broadband service for aircraft occupants. Due to the frequency sharing of Aeronautical-ESIM (A-ESIM) satellite broadband service with previous ones, there is a possibility of its frequency interference on them. According to the resolution WRC 2019, the A-ESIM frequency interference on co-frequency ground stations must be prevented by observing the Power Flux Density (PFD) mask . However, the approval of the PFD condition fulfillment method has been postponed to the World Radio Communication Conference 2023. In this regard, some countries have simulated and determined the minimum allowable height of A-ESIM from the ground, so that the PFD reached the ground does not exceed the specified mask. In many cases, only limited positions of unauthorized heights will cause the PFD to override the mask. Therefore, in this paper, with a new solution, the authorized and unauthorized positions of A-ESIM are determined at any height less than the minimum allowable height, relative to a fixed ground station. In addition, the unauthorized positions of the A-ESIM in both take-off and landing positions are simulated and determined depending on the slope of the A-ESIM

Keywords

• aeronautical-earth station in motion (a-esim)
• frequency interference
• fixed ground station
• power flux density