中文摘要：

对共光路高重频激光测距中主波与回波时刻发生重叠的情况进行了分析和研究，得出二者重叠的条件并编程实现计算机仿真。结果表明，近地卫星测距中的重叠率约为7％，中高轨目标测距中的重叠概率略高但仍小于8％，远距离月球测距中的重叠率高达10％。

英文摘要：

High Repetition Rate Laser Ranging is an effective method to extend measurement data and improve the accuracy of the reference point. This paper introduces the principle and techniques of the Yunnan Observatory Common Optical-Path High Repetition Rate Laser Ranging system. We particularly analyze the overlapping between main wave and echo through simulations in the Common Optical-Path High Repetition Rate Laser Ranging, and obtain the criteria of the overlapping. We find that the overlap rate for a near-Earth orbit satellite is about 7%, the overlap rate for a high-orbit satellite is slightly higher but still less than 8%, and the overlap rate for a lunar surface reflector is about 10%.