Method for calculating A-E-C triaxial antenna coordinate of shipborne satellite communication earth station
An A-E-C, satellite communication technology, applied in the field of test communication of aerospace measurement and control technology, can solve problems such as difficulty in capturing targets, single means of ship roll isolation, polarization angle error, etc., to ensure real-time and correctness, and improve capture and tracking efficiency. , the model has a good effect of robustness
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[0053] To illustrate the present invention in detail, first, the stability tracking system of the shipborne A-E-C triaxial antenna is analyzed as follows:
[0054] 1), A-E-C three-axis seat frame form
[0055] Shipborne satellite communication antenna mounts generally adopt the AEC three-axis form, and a third axis-cross axis (C axis) is added between the azimuth axis (A axis) and the pitch axis (E axis). The space is orthogonal, the C axis can use the secant compensation effect, so that the antenna can track the zenith target reliably. The structure of the three-axis antenna is as figure 1 As shown (the dotted line in the figure is the line of sight of the antenna).
[0056] 2) Antenna stable tracking system
[0057] The A-E-C servo system of a certain type of survey ship satellite earth station uses a three-axis stabilization and two-axis tracking system. Three-axis stabilization refers to the azimuth following the heading, which isolates the effect of heading changes on the antenn...
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