Shipborne satellite communication system and method for shipborne antenna to track satellite
A satellite communication system and satellite communication technology, applied in the field of shipborne satellite communication systems and shipborne antenna tracking satellites, can solve the problems of short antenna life, low stability, complicated installation, etc., and achieve low latency and real-time attitude control. Good performance and high precision
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Embodiment 1
[0036] like Figures 1 to 3 As shown, the present embodiment provides a shipborne satellite communication system, which includes an antenna base 1, a satellite communication antenna 2, a MEMS inertial measurement unit and a servo drive unit; wherein the satellite communication antenna 2, the MEMS inertial measurement unit and the servo drive unit The units are all installed on the antenna base 1; the satellite communication antenna 2 is used to send and receive Ku or L-band communication signals of geosynchronous orbit communication satellites or low-inclination geosynchronous orbit communication satellites; the MEMS inertial measurement unit is used to obtain the attitude parameters of the hull; the servo The drive unit is used to drive the satellite communication antenna to rotate, so as to adjust the azimuth angle, elevation angle and polarization angle of the satellite communication antenna.
[0037] The satellite communication antenna 2, MEMS inertial measurement unit and ...
Embodiment 2
[0043] Based on the shipborne satellite communication system provided by Embodiment 1, such as Figure 4 As shown, the present embodiment provides a method for a shipborne satellite communication antenna to track a satellite, which includes:
[0044]S1: Use GPS to obtain the geographic longitude and latitude where the hull is located, and use MEMS inertial measurement unit to obtain the attitude parameters of the hull;
[0045] S2: The attitude calculation unit performs coordinate transformation and calculation according to the star alignment parameters of the target satellite, the geographic longitude and latitude of the hull, and the attitude parameters of the hull, and calculates the azimuth angle required for the antenna to align with the target satellite, Pitch and polarization angles;
[0046] S3: The control unit controls the servo drive unit to drive the satellite communication antenna to rotate according to the calculated azimuth angle, elevation angle and polarizati...
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