云台1.2m望远镜共光路千赫兹卫星激光测距系统

1.2 m Telescope Satellite Co-Optical Path kHz Laser Ranging System

千赫兹(kHz)激光测距是增加卫星激光测距观测数据和提高标准点精度的有效措施之一。分析研究了基于共光路的kHz激光测距系统的实现原理和方法,包括光路、电路和计算机控制等。给出了使用旋转快门实现共光路kHz激光测距的新思路,开发1.2 m望远镜共光路kHz激光测距系统。该系统已用于常规观测,实际观测结果表明,系统性能较好且工作稳定,地靶测距精度约为5 mm,卫星测距精度优于2.0 cm。

Kilo-Hertz（kHz） laser ranging is one of effective methods to increase the measurement frequency and improve the accuracy of normal point（NP）.Principle and method of realizing common optical path kHz laser ranging are analyzed,which include optical path,circuit and computer control etc.Novel concept of rotation shutter is proposed to build kHz system,and control system of 1.2 m telescope common optical path kHz laser ranging has been developed.It has been successfully used for routine observation.Actual observations show that the system performs well and runs stable.The ground target ranging accuracy is about 5 mm,and satellite ranging accuracy is better than 2.0 cm.