低纬子午环方位定向误差及其检测

Orientation Error of the LLMC and its Detection

本文分析了低纬子午环方位定向的误差来源和设置方位检测系统的必要性 ,给出了检测系统的参数 ,用实测值计算了钢球定位盘的精度和用检测值作修正的精度 ,这种修正精度是仅依靠提高仪器稳定性和加工精度所不能达到的 ,文中还叙述了检测系统存在的问题和改进方法。

The source of the orientation error of the LLMC is analyzed in this paper. The necessity to set an azimuth detection system is discussed, and parameters of the system are also presented. The precision of the ball-locating disk is estimated. The modified precision of the LLMC can not be obtained if we only rely on improving the instrumental stability and the manufacturing accuracy. The open questions in the detection system and the improvement are described in the paper.