Research And Application On A Novel Shipborne Satellite Communication Antenna Control

"Communication in Moving"system requires the antenna can segregate the influence ofthe moving carrier to the gesture of antenna and make the antenna stably aim at the satellite tocarry out the continuous communication with the satellite. This requires"Communication inMoving"system should have a good antenna control system, that is the control system notonly achieving the task of tracking satellite, but also having the ability of isolating theinfluence of the moving carrier and pointing to space stably. Synthesizing cost, performance,practicality and other factors, the control system researched in the project achievesconical-scanning automatic tracking based on the inertial measurement unit and GPScombination scheme.This article based on "Ku-band 0.6m ship-borne satellite communication in moving "project.Firstly, the article briefly describes the components and working methods ofship-borne"Communication in Moving"system. And then the article emphatically describesthe software & hardware design of ship-borne satellite mobile communication antenna controlsystem. Primary includes: the optimization of C8051F120-core processors to ensure that theefficient operation of the ship-borne antenna controller; the optimization of electroniccompass,GPS,gyro and other gesture-sensitive components get the better performance of theantenna controller isolated the influence of the moving carrier;the improvements of theship-borne antenna servo drive control module drive the brushless DC motor servo executivecompensation effectively; The modular design of system control software ensure that theimplementation efficiency and accuracy of the control system; A new tracking method isproposed which can overcome situations of tracking satellite signal mistakenly. That is thetrack technology which is based on the larger carrier and beacon signals. In addition ,thispaper puts forward several optimization of the software algorithm. It mainly can overcome thezero-point drift of gyro so as to improve the speed of system which captures satellite signaland enhance tracking accuracy. After a testing of designing system for tracking performance,the testing results show that design of ship-borne satellite mobile communication earth stationantenna control system is success.