利用可变长度资料外推地极坐标的方法  

A PROCESS OF EXTRAPOLATION OF POLAR COORDINATES WITH DATA IN CHANGEABLE LENGTH

作　　者：萧耐园[1] 夏一飞[1] 丁月蓉[1] 

机构地区：[1]南京大学天文系

出　　处：《南京大学学报（自然科学版）》1991年第3期456-466,共11页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金

摘　　要：本文设计了一种独特的分离地极坐标各分量的方法.根据这方法能够用可变长度的资料对地极坐标进行外推.在大量试算的基础上,总结出一套经验性的资料长度准则.依据这一准则以本方法外推地极坐标,可以在大多数情况下获得0″.017～0″.030的外推精度.In this paper, an original process of separating polar coordinates into several components has been devised. According to this process polar coordinates can be extrapolated by means of data in changeable length. Based on a wealth of testing calculations an empirical criterion has been concluded for data length. With this criterion and by the method to extrapolate polar coordinates, the extrapolation precision of between 0'017 and 0'.030 can be obtained in most of the cases.

关 键 词：地极坐标 外推 可变长度义资料 

分 类 号：P127.4[天文地球—天体测量]