Composite tracking method of VICTS antenna

Abstract

The invention discloses a composite tracking method of a VICTS antenna. According to the method, coarse alignment and fine alignment are realized according to the longitude of a target synchronous satellite and the longitude and latitude of the current position of a mobile carrier in combination with a beacon AGC value of the target synchronous satellite acquired by a beacon receiver in a satellite communication in motion system in real time, and initial satellite finding of the VICTS antenna is completed quickly; after the initial satellite finding of the VICTS antenna is completed, the VICTSantenna is enabled to enter variable step size stepping tracking; when the variable step size stepping tracking is finished, the normalized value of the beacon AGC value of the target synchronous satellite obtained in real time is read at the same time; and the VICTS antenna is allowed to enter program tracking or variable step size stepping tracking according to the read normalized value. The method has the advantages that the method conforms to the structural characteristics of the VICTS antenna, the tracking speed and tracking precision of the VICTS antenna can be effectively improved, andit is ensured that the VICTS antenna can rapidly, stably and accurately track the target satellite.

Description

technical field [0001] The invention relates to a satellite communication antenna technology, in particular to a compound tracking method of a VICTS (variable inclination continuous section array) antenna. Background technique [0002] Satellite communication antenna technology has the advantages of wide coverage, large capacity, low interference and high communication quality, and has become an important means of mobile carrier communication such as vehicle, ship, airborne and missile. In order to enable mobile carriers on the move to communicate with satellites anytime and anywhere, communication antenna technology in motion has become an urgent need for the development of satellite communications. [0003] In the communication-in-motion antenna technology, the antenna is required to have performance indicators such as high gain, low profile, broadband, multi-polarization, low cost, high scanning angle and high tracking accuracy. Among them, the VICTS antenna, as a mechan...

AI Technical Summary

Problems solved by technology

However, the tracking algorithm of traditional mechanical scanning antennas in motion is fixed-step tracking. When the step size is large, the tracking speed is fast but the tracking accuracy is low. When the step size is small, the tracking accuracy is high but the tracking speed is slow. It cannot meet the requirements of VICTS antenna for tracking speed and tracking accuracy at the same time, and the tracking efficiency is low

In addition, although the program tracking applicable to all mobile communication antennas has a fast tracking speed, the zero point drift will occur after long-term work, which will cause large errors in the measured attitude data and reduce the tracking accuracy, making it impossible to achieve long-term effective tracking

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