Antenna self-adaptive unwinding method with limited orientation rotation range on moving carrier

Abstract

The invention discloses an antenna self-adaptive unwinding method with a limited orientation rotation range on a moving carrier, and belongs to the technical field of satellite communication antennas.According to the method, a multi-turn absolute coded disc is adopted to perform axis angle acquisition, and an angle software partitioning method is adopted to realize azimuth angle partitioning in asoftware mode; two target deck angles AP and AN are obtained through conversion calculation from a target geographic angle to a target deck angle; an optimal initial capture position AP or AN is selected according to the planned heading, thus guaranteeing that the antenna tracking locking time is the longest; and finally, according to an orientation current angle and heading change, a shortest orientation movement distance is planned according to an orientation unwinding processing mechanism, and tracking locking is restored in the shortest time. The method has the characteristics of short time, high precision, high reliability and the like, and ensures that the antenna tracks and locks the target for a long time to the greatest extent.

Description

technical field [0001] The invention relates to the technical field of satellite communication antennas, in particular to an adaptive unwinding method for an antenna with a limited azimuth rotation range on a moving carrier, which can be used for adaptive unwinding of a ship-borne three-axis satellite communication antenna with a limited azimuth movement range . Background technique [0002] Shipborne satellite communication, as a way of mobile satellite communication, has broad application prospects. Its technical development is mainly restricted by the development of ship-borne mobile satellite antenna technology, so the research on ship-borne mobile communication antenna has very practical significance. The purpose of the shipborne satellite antenna is to ensure that the servo can enable the antenna to track the satellite quickly and accurately, and complete the stable and reliable operation of the satellite communication link. [0003] In the field of ship-borne satell...

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Problems solved by technology

[0005] 1) The existence of azimuth partition hardware switch, the hardware circuit is complex, the reliability is reduced, and the cost is increased;

[0006] 2) The use efficiency of the antenna is low, and the capture process adopts the principle of the closest position, that is, the azimuth captures the position closest to the current azimuth angle. When the azimuth reaches the limit, it needs to be unwound immediately, so the antenna communication is interrupted;

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