【摘要】 上海天文台在相距25.2km的徐家汇和佘山两部分之间进行了激光时间比对实验。本文分别给出两个站在不同能见度情况下所接收到的激光信号的强度,分析了比对结果的精确度。同时还讨论了在地面和卫星的激光时间比对实验中由于地球自转效应的相对论改正问题,提出了一种实用计算公式。更多还原

【Abstract】 Time comparison experiment via laser pulses has been made between the two sections of Shanghai Observatory,Xujiahui and Sheshan,separated by 25.2 km.The strength of the laser signals received at the two sections in different seeings has been respectively calculated and the precision of comparison results has been analysed in this paper.The relativistic correction due to earth rotation for both terrestrial and satellite time comparison experiments via laser pulses has been discussed and a practical calculation formula is proposed.更多还原