基于卫星授时与定位的追日系统设计

Design of a sun-chasing system based on satellite timing and positioning

针对常规追日系统易受气象环境影响及追日精度不高的问题,设计了一种基于卫星授时与定位的追日系统,给出了系统的整体框架和主要模块的硬件电路,介绍了从卫星信号接收模块解析出卫星定位和授时信息的方法,进一步分析了利用卫星授时和定位信息计算太阳高度角与方位角的原理与算法,设计了利用舵机追踪太阳方位角和高度角的方案并进行仿真。仿真结果表明,系统采用的太阳位置算法具有较高精度,设计的硬件结构和控制程序可实现预想的追日功能。

Aiming at the problems that the conventional sun-chasing system is easily influenced by meteorological environment and its accuracy is not high,a sun-chasing system based on satellite timing and positioning is designed,the overall framework of the system is introduced,the hardware circuits of the main modules are given,the method of resolving satellite positioning and timing information from the satellite signal receiving module is introduced.The principle and algorithm of calculating the solar altitude angle and azimuth angle by using satellite timing and positioning information are further analyzed,and a technical scheme is designed to track the sun′s azimuth and altitude angle using servos.The experimental results show that the sun position algorithm used in the system has high accuracy,and the designed hardware structure and control program can realize the expected function of chasing the sun.