航天器总装精度测量中一种不规则棱镜矢量计算方法

航天器总装精度测量一般是通过被测设备上安装的立方镜实现的。某型号上的一种设备受其在航天器上安装位置的限制，使用经纬仪和现有精度测量软件无法直接测得立方镜三个相互垂直平面法线在航天器坐标系下的角度。文章提出使用切角为135。不规则棱镜替代立方镜，并详细介绍了切角为135。不规则棱镜三个相互垂直平面法线在航天器坐标系下矢量的计算方法。该方法已经过验证和认可，并应用到后续型号的精度测量工作中。

A vector calculation method of irregular prism for spacecraft integration precision measurement

The spacecraft integration precision measurement is based on a cubic prism fixed on the equipment. Because of the limitation of the assembly position on the spacecraft, the use of the electronic theodolite and the current precision measuring software can not fully cover the angles of the three normals of the mutually perpendicular planes of the cubic prism relative to the spacecraft coordinate system. This paper proposes a method of replacing a cubic prism with a 135 irregular prism and a vector calculation method for the irregular prism, to deal with the vectors of three normals of the three mutually perpendicular planes of the 135~ irregular prism relative to the spacecraft coordinate system. This method was tested, verified and applied in the follow-up spacecraft precision measurement.