论文部分内容阅读
在卫星编队飞行系统中,射频(radio frequency,RF)相对测量敏感器能够完成两颗卫星的相对位置和姿态的测量,为了验证其测量精度,提出了一种基于激光跟踪仪的快速标定方法.在标定过程中,针对拟合坐标原点和坐标轴产生误差较大的问题,提出了一种基于最小二乘拟合球体和圆的方法,分别确定坐标系的原点和坐标轴;利用坐标系间的固有关系设计了相对坐标系的快速转换方法.在飞行器模拟平台进行验证,实验结果表明,拟合坐标系原点均方根误差为0.120 764mm,拟合坐标轴轴向的均方根误差为0.157 138mm,坐标系转换误差的范围为0.30~0.75mm,能够满足敏感器毫米级定位精度的标定要求.
In the satellite formation flight system, the radio frequency (RF) relative measurement sensor can measure the relative position and attitude of two satellites. In order to verify its measurement accuracy, a fast calibration method based on laser tracker is proposed. In the process of calibration, aiming at the large error of the origin and the coordinate axis of the fitted coordinates, a method based on least square fitting sphere and circle is proposed to determine the origin and coordinate axis of the coordinate system separately. The experimental results show that the root mean square error of the origin of the fitted coordinate system is 0.120 764mm and the root mean square error of the fitted coordinate axis is 0.157 138mm, coordinate system conversion error range of 0.30 ~ 0.75mm, to meet the sensor millimeter positioning accuracy calibration requirements.