Chandler摆动的双频现象用于拟合极移确定项的研究  

On Fitting the Sure_part of Polar Motion with Two_frequency of Chandler Wobble

作　　者：魏二虎[1,2] 殷志祥[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]武汉大学地球空间环境与大地测量教育部重点实验室,武汉市珞喻路129号430079

出　　处：《测绘地理信息》2014年第3期5-7,共3页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41374012);国家863计划资助项目(2008AA12Z308);武汉大学测绘学院2012年本科专业综合改革教学研究项目(201220)

摘　　要：极移中Chandler摆动出现的双频现象,一直以来为许多学者所关注。推导了基于Chandler摆动双频的极移确定项模型,并采用该模型对极移确定项进行了拟合。与仅采用单频进行确定项拟合的对比表明,利用双频能取得更理想的结果。Many researchers have been interested in whether Chandler Wobble exists two-frequency. So, two-frequency mod- el of the Polar motion＇ s sure part is deduced in this paper, based on which the Polar motion＇ s sure part is matched. The re- sult of two-frequency is compared with that of one-frequency of Chandler Wobble, which shows that better results can be got by using two-frequency of Chandler Wobble to match.

关 键 词：极移 CHANDLER摆动 双频 确定项拟合 

分 类 号：P228[天文地球—大地测量学与测量工程]