基于数字影像的卫星像片姿态计算系统

Satellite attitude calculation system based on digital image recognition

在航空领域中,恒星的数字影像是卫星获取姿态信息的主要途径。为提高卫星姿态测量信息的精度,文中引入图像处理技术和矢量定姿等原理,综合使用了视位置和数据库等计算方法,建立了高精度的卫星像片的姿态计算系统。该系统使用了能快速运算的自动找星算法,自动识别出用于测量的星像点,降低了计算中的误差,并改善了整个计算系统的精确度。

In the field of aviation, the digital image of stars is the main way for satellite to acquire attitude information. In order to improve the precision of satellite attitude measurement information, this paper introduces image processing technology and vector attitude determination principle, the integrated use of the calculation method of apparent position and database, established a high precision satellite photo attitude calculation system. The system uses fast automatic star finding algorithm, which can automatically identify the star points for measurement, effectively reduce the accumulation error in the system, and improving the accuracy of satellite attitude calculation system.