Comparison of Simulated and Measured Power of the Earth-Space Link for Satellite-Based AIS Signals

• DOI: 10.3390/s23156740
• Publication Date: 2023-07-28T06:10:45Z
• Authors: Xiang Dong; Zhigang Yuan; Fang Sun; Qinglin Zhu; Mingchen Sun; Pengfei Zhu
• Keywords: Elevation (ballistics); Root mean square

This research aims to analyze the impact of Earth-Space link on Automatic Identification System (AIS) signals ships. To achieve this, we established a simulation system that measures receiving power AIS via satellite platforms. We validated by utilizing observation data from Tiantuo-5. Through this simulation, quantitatively analyzed effects ionospheric TEC (Total Electron Content) and space loss received power. During processing data, construct geometric propagation model measured positions both ship. then calculate antenna gain remove any errors. Additionally, eliminate deviation elevation azimuth angles caused motion. allows us determine actual different ships reaching platform. Upon comparing with simulated power, it was noted exhibited an increasing trend as angle increased. led RMSE (Root Mean Square Error) result approximately one, indicating accuracy system. These findings hold significant implications for analyzing interference factors in satellite-ground links.