光电轴一致性是精密测量雷达的一项关键技术指标,它关系到雷达系统测试时的架设质量,直接决定着雷达系统能否快速准确捕获目标。传统的光电轴一致性校准方法可以概括为光标刻度判读法,该方法主要存在判读困难、适应性较差等缺点。文中基于精密测量雷达自身的高准确度伺服角度编码器,提出了一种新的光电轴一致性校准方法:伺服编码器较差法,通过对比该方法与传统方法的校准不确定度及其操作实施等特点证明,其相比传统方法,该方法更加高效准确,具有更强的适应性。

Photoelectric shaft consistency is a significant performance index of precision measurement radar. This index is related to the setting quality of radar measurement system,and it directly determines whether the radar can catch its target fast and accurately or not. The traditional photoelectric shaft consistency calibration means is called cursor line judge method,with the defect of difficult numerical reading and inferior adaptability etc. A reformative calibration method of photoelectric shaft consistency is designed in this paper, with the name of servo system encoder compare method, based on the high accuracy digital shaft encoder of a certain precision measurement radar. It has more efficiency and low uncertainty by contrast with traditional way, with the uncertainty analyzing of the two methods.