Antenna tracking and self-calibration apparatus and method for satellite communications among stations

Abstract

The invention provides an antenna tracking and self-calibration apparatus and method for satellite communications among stations in order to target the deficiency of the antenna step-tracking mode used in the previous satellite communication field among satellite navigation system stations and the deficiency of conducting antenna pointing and calibrating by technicians in phases. Therefore, the apparatus and method of the invention directly utilize the navigated network information of the satellite to calculate the azimuth and pitch angle information of the satellite accurately and then send the information to a satellite antenna for tracking. Compared with the previous step-tracking mode, the case involving tracking failure will not repeat itself, therefore, increasing the reliability of the satellite communication antenna tracking among the satellite navigation system stations. In the tracking process, through the determination of the signal power received by the antenna to determine the pointing station of the antenna and according to the requirement to complete the self-calibration of the antenna pointing, it is possible to avoid the deficiency of calibration and maintenance by technicians going to the stations in person.

Description

technical field [0001] The invention belongs to the field of satellite communication between satellite navigation systems, and relates to a device and method for antenna tracking and self-calibration. Background technique [0002] The satellite navigation system is usually divided into three parts: the first is the space constellation part which is composed of satellites and realizes the broadcasting of navigation signals; the second is the ground operation and control part which is composed of ground stations and realizes system operation control; The part of the user equipment where the navigation signal enables positioning. The ground operation and control part of the satellite navigation system realizes the operation control of the system, and is composed of a main control station, a monitoring station and an injection station. [0003] Reliable data transmission between the monitoring station and the main control station, and between the main control station and the in...

AI Technical Summary

Problems solved by technology

The above antenna step tracking method uses the principle that the more accurate the antenna axis points to the satellite, the greater the power of the received signal. However, in the actual application process, due to the occasional signal power distortion, it will occasionally appear in the long-term tracking process. The failure of tracking will cause the interruption of satellite communication between stations and affect the normal operation of the system. It is necessary for personnel to carry instruments to the station for maintenance, re-calibration and tracking

In addition, the mechanical deformation accumulated slowly during the long-term operation of the satellite antenna will gradually increase the deviation between the antenna electrical axis pointing returned by the antenna angle sensor and the actual pointing point, requiring periodic antenna pointing calibration work by technicians

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