Development of the geodetic coordinate system in Antarctica

Defining a universal geodetic coordinate system is one of the fundamental challenges of geodesy. We present a review of the basic general coordinate systems -- the space rectangular coordinate system, the geodetic coordinate system, the topocentric coordinate system, and the plane coordinate system. We then look ： t the World Geodetic System WGS72 and WGS84 and the In- ternational Terrestrial Reference Frames ITRF2000 and 1TRF2005, which were introduced when space technology became avail- able. The history of international geodetic coordinate systems in the Antarctic region is briefly reviewed and the development of the geodetic coordinate systems in the Chinese Great Wall Station and Zhongshan Station in Antarctica is outlined. Finally, the issue of coordinate system transformation is discussed.     

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关于2000中国大地坐标系的建议

简述了建议的我国新一代大地坐标系——2000中国大地坐标系的定义和实现,给出了参考椭球的定义常数和导出常数的计算公式及其常数值,以及椭球面及其外部的正常重力公式。     

区域GPS大地网在地球参考框架中表达方法研究

给出对区域GPS大地网进行解算或改造的最小约束法.几种不同约束解集的比对结果表明:最小约束法是一种区域GPS大地网在地球参考框架中表达的最优方法.     

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国际南极大地参考框架的构建与进展

回顾了南极大地参考框架发展的历史,总结了由国际南极研究科学委员会(SCAR)组织的历次南极地区大地测量观测活动的成果,并结合2007~2008第四次国际极地年(IPY)对南极大地参考框架的前景进行了展望,其中重点介绍了我国对构建南极大地参考框架的贡献。     

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章村-楼塔一带双溪坞群Sm-Nd 和~(40)Ar-~(39)Ar年龄及地质年代意义

富阳章村－萧山楼塔一带双溪坞群火山岩系首次获得了全岩Ｓｍ－Ｎｄ等时年龄为１１５４±１２２Ｍａ和４０Ａｒ３９Ａｒ等时年龄为９９４±２０Ｍａ。后者很可能是代表岩石遭受过后期热事件影响的扰动年龄，但它仍比原有的锆石Ｐｈ－Ｐｈ年龄（８７５Ｍａ和９０４Ｍａ）要大得多。据此，我们认为该区双溪坞群的形成时代大致为１１００±５０Ｍａ，相当于中元古代晚期蓟县系。同时，结合其它有关同位素年龄资料，探讨了浙西北地区相当地层（绍兴平水群、开化钟吕群）的地质年代对比及神功运动的时限等问题。