文档介绍：基于单片机的卫星天线指向系统设计
(2007级电子信息工程本科姚柱坚)
中文摘要
近年来,民用卫星直播业务、卫星数据通信业务发展迅速。然而现在的民用卫星接收站调校技术落后,如只能手工调校、定点接收等缺点,不利于民用商业卫星业务的大范围推广。
本毕业设计的研究目的,是通过价格低廉的单片机系统实现天线对卫星的自动快速对准。该系统包括单片机控制系统、GPS接收模块、电子罗盘模块、液晶显示模块和电机驱动电路。设计首先通过接收GPS模块信号和电子罗盘信号确定所需指向卫星的方位角,仰角,然后计算出天线高频头的极化角,电子罗盘用于确定接收站点的方位角。这些数据的接收和运算都是通过STC12C5A32S2单片机来完成。单片机接收到这些数据后,即可根据这些数据驱动传动系统,使卫星天线自动快速准确地对准卫星。这些信息都通过点阵液晶屏显示出来给用户查看。
基于该系统的研究,今后民用卫星直播业务、卫星数据通信业务有望扩展到移动载体上。
关键词:卫星天线、对准卫星、GPS、电子罗盘、单片机
ABSTRACT
In recent years, civilian satellite broadcast operations, satellite munications business has developed rapidly. Now, however, civilian satellite receiving stations tuned technological backwardness, such as can only be manually adjusted, fixed-point to receive such ings, is not conducive to mercial satellite business, large-scale promotion.
The purpose of this study graduation, through low-cost microcontroller system implementation of the satellite antenna alignment automatically and quickly. The system consists of puter control system, GPS receiver module, pass modules, liquid crystal display module and motor drive circuit. Design of the first module by receiving GPS signals and pass to determine the necessary signals to the satellite's azimuth, elevation, and then calculate the angle polarization of the antenna tuner, the pass is used to determine azimuth receiving