关于地球和月球首子午线的研究

首先对地球首子午线在不同时期的定义进行了分析和总结,进一步明确了当前对地球首子午线的严格定义,澄清了地球首子午线即过格林尼治天文台的子午线这一模糊认识。同时,结合我国月球探测工程的需要,分析了目前IAU推荐的月球首子午线定义和Bryce Walden等人提出的月球首子午线定义的优缺点。最后,对我国月球探测工程中坐标系的选择提出了建设性的意见。

Research on Prime Meridian of the Earth and the Moon

First,the paper summarized and analyzed the definition of the earth prime meridian in different periods,clarified the ambiguous recognition that the earth prime meridian was the meridian passing Greenwich astronomical observatory and gave the rigorous definition about the Earth prime meridian presently.Second,according to the need of the Chinese lunar exploration,the paper analyzed the advantages and disadvantages about the definitions of the Moon prime meridian recommended by IAU and Bryce Walden.Final,the paper proposed some constructive advices about Chinese lunar probe engineering.