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- W4385347245 abstract "This research aims to analyze the impact of the Earth-Space link on the Automatic Identification System (AIS) signals of ships. To achieve this, we established a simulation system that measures the receiving power of AIS signals via satellite platforms. We validated the system by utilizing observation data from Tiantuo-5. Through this simulation, we quantitatively analyzed the effects of ionospheric TEC (Total Electron Content) and space loss on the received power. During the processing of observation data, we construct a geometric propagation model utilizing the measured positions of both the satellite and the ship. We then calculate the antenna gain and remove any system errors. Additionally, we eliminate the deviation of elevation and azimuth angles caused by satellite motion. This allows us to determine the actual power of different ships reaching the receiving platform. Upon comparing the measured power data with the simulated power, it was noted that both exhibited an increasing trend as the elevation angle increased. This led to an RMSE (Root Mean Square Error) result of approximately one, indicating the accuracy of the simulation system. These findings hold significant implications for analyzing interference factors in satellite-ground links." @default.
- W4385347245 created "2023-07-29" @default.
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- W4385347245 date "2023-07-27" @default.
- W4385347245 modified "2023-09-26" @default.
- W4385347245 title "Comparison of Simulated and Measured Power of the Earth-Space Link for Satellite-Based AIS Signals" @default.
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- W4385347245 doi "https://doi.org/10.3390/s23156740" @default.
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