Short-time-scale features of the Earth's polar motion

被引：1

作者：

Akulenko, L. D. ^{[1
]}

Markov, Yu. G. ^{[2
]}

Perepelkin, V. V. ^{[2
]}

Rykhlova, L. V. ^{[3
]}

机构：

[1] Russian Acad Sci, Inst Problems Mech, Moscow 117526, Russia

[2] Moscow Inst Aviat, Moscow 125080, Russia

[3] Russian Acad Sci, Inst Astron, Moscow 109017, Russia

来源：

ASTRONOMY REPORTS | 2009年 / 53卷 / 11期

基金：

俄罗斯基础研究基金会;

关键词：

95.10.Jk;

D O I：

10.1134/S1063772909110122

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The fundamental astrometric problem of high-accuracy interpolation and forecasting of the Earth's polar motion on short time scales from 1-2 to 10-30 days is studied. Hierarchies of interval length and parameter accuracy are established using appropriate models for the process. Filtering algorithms are adjusted using a weighted least squares fit of measurements of the International Earth Rotation Service (IERS). Best-fit estimates for the main features of the motion are obtained for various time intervals; interpolations and forecasts are compared with the IERS measurements.

引用

页码：1070 / 1077

页数：8

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