Mobile satellite communication phase array antenna beam forming and tracing method

Abstract

The invention discloses a method for tracking formation of an antenna beam of a phase array in a mobile satellite communication, relating to a fast antenna tracking technology in the field of mobile satellite communication. The method comprises the steps that: a receiving channel of antenna equipment is divided into a communication channel and a beaconing channel; in the beaconing channel, orthogonal and digital down-conversion of a beaconing signal is carried out and then a low-frequency signal is formed after decimation filtering and processed by an arrival algorithm; the direction of arrival of waves from a satellite is estimated and then the beam formation calculation of the communication channel is carried out based on the direction of arrival of waves and the weight of each communication channel is calculated; according to the weight, phase-shifting is carried out on the radio frequency of the communication channel and beams pointing at the satellite are formed on the communication channel to realize the tracking. The method of the invention has the capacity of fast tracking, saves the servo-mechanical structure, and has the advantages of good performance in impact resistance and shock resistance, small volume, light weight, convenient installation, small breadth, etc., especially applicable to tracking the objects in mobile carriers, such as vehicles, and airplanes, etc.

Description

technical field [0001] The invention relates to a mobile satellite communication phased array antenna beamforming tracking method in the field of mobile satellite communication, and is especially suitable for target tracking technology in mobile carriers such as vehicles and airborne. Background technique [0002] Traditional mobile satellite communication antenna tracking adopts two-dimensional mechanical tracking method. Its disadvantages are large size, heavy weight, and inconvenient installation; under the conditions of mobile communication, its tracking speed is slow, and it is difficult to guarantee tracking performance; the reflective surface used in it The size of the antenna is large, the corresponding mechanical inertia is also large, the impact resistance and vibration performance are poor, and the speed response is slow, so it is not suitable for use in poor road conditions and high-speed off-road. To overcome the swaying and turning of the carrier, the equipment...

AI Technical Summary

Problems solved by technology

[0002] Traditional mobile satellite communication antenna tracking adopts two-dimensional mechanical tracking method. Its disadvantages are large size, heavy weight, and inconvenient installation; under the conditions of mobile communication, its tracking speed is slow, and it is difficult to guarantee tracking performance; the reflective surface used in it The antenna is large in size, the corresponding mechanical inertia is also large, the impact resistance and vibration performance are poor, and the speed response is slow, so it is not suitable for use in poor road conditions and high-speed off-road

To overcome the swaying and turning of the carrier, the equipment requires an expensive inertial navigation system

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