{"title":"章动观测值减少的一个先验模型:KSV(1994.3)章动序列","authors":"T. Herring","doi":"10.1017/S1539299600011060","DOIUrl":null,"url":null,"abstract":"Abst.ra.ct! We discuss the formulation of a new nutation series to be used 'in the reduction of modern space geodetic data. The motivation for devel: oping such a series is to develop a nutation series that has smaller short . period errors than the IAU 1980 nutation series and to provide a series that can be used with techniques such as the Global Positioning System (GPS) eo • that have sensitivity to nutations but can directly separate the effects of o M ' nutations from errors in the dynamical force models that effect the satellite ^ to ,$• orbits. A modern nutation series should allow the errors in the force models ^ *o <? .for GPS to be better understood. The series is constructed by convolving 2 £ § the Kinoshita and Souchay rigid Earth nutation series with an Earth response function whose parameters are partly based on geophysical models ^ 't of the Earth and partly estimated from a long series (1979-1993) of very x. long baseline interferometry (VLBI) estimates of nutation angles. Secular 2 rates of change of the nutation angles to represent corrections to the precession constant and a secular change of the obliquity of the ecliptic are included in the theory. Time dependent amplitudes of the Free Core Nutation (FCN) that is most likely excited by variations in atmospheric pressure are included when the geophysical parameters are estimated. The complex components of the prograde annual nutation are estimated simultaneously with the geophysical parameters because of the large contribution to the nutation from the 5i atmospheric tide. The weighted root mean square (WRMS) scatter of the nutation angle estimates about this new model are 0.32 mas and the largest correction to the series when the amplitudes of the ten largest nutations are estimated is 0.17 ± 0.03 mas for the in phase component of the prograde 18.6 year nutation.","PeriodicalId":422890,"journal":{"name":"Highlights of Astronomy","volume":"76 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":"{\"title\":\"An a priori model for the reduction of nutation observations: KSV(1994.3) nutation series\",\"authors\":\"T. Herring\",\"doi\":\"10.1017/S1539299600011060\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abst.ra.ct! We discuss the formulation of a new nutation series to be used 'in the reduction of modern space geodetic data. The motivation for devel: oping such a series is to develop a nutation series that has smaller short . period errors than the IAU 1980 nutation series and to provide a series that can be used with techniques such as the Global Positioning System (GPS) eo • that have sensitivity to nutations but can directly separate the effects of o M ' nutations from errors in the dynamical force models that effect the satellite ^ to ,$• orbits. A modern nutation series should allow the errors in the force models ^ *o <? .for GPS to be better understood. The series is constructed by convolving 2 £ § the Kinoshita and Souchay rigid Earth nutation series with an Earth response function whose parameters are partly based on geophysical models ^ 't of the Earth and partly estimated from a long series (1979-1993) of very x. long baseline interferometry (VLBI) estimates of nutation angles. Secular 2 rates of change of the nutation angles to represent corrections to the precession constant and a secular change of the obliquity of the ecliptic are included in the theory. Time dependent amplitudes of the Free Core Nutation (FCN) that is most likely excited by variations in atmospheric pressure are included when the geophysical parameters are estimated. The complex components of the prograde annual nutation are estimated simultaneously with the geophysical parameters because of the large contribution to the nutation from the 5i atmospheric tide. The weighted root mean square (WRMS) scatter of the nutation angle estimates about this new model are 0.32 mas and the largest correction to the series when the amplitudes of the ten largest nutations are estimated is 0.17 ± 0.03 mas for the in phase component of the prograde 18.6 year nutation.\",\"PeriodicalId\":422890,\"journal\":{\"name\":\"Highlights of Astronomy\",\"volume\":\"76 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"10\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Highlights of Astronomy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1017/S1539299600011060\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Highlights of Astronomy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1017/S1539299600011060","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10
摘要
Abst.ra.ct !我们讨论了一个新的章动级数的公式，用于现代空间大地测量数据的约简。开发这样一个系列的动机是开发一个短时间更小的章动系列。与IAU 1980章动序列相比，周期误差更大，并提供一个可以与全球定位系统(GPS) eo•等技术一起使用的系列，这些技术对章动具有敏感性，但可以直接将o M '章动的影响与影响卫星轨道的动力模型中的误差分开。现代章动序列应该允许力模型中的误差^ *o 本文章由计算机程序翻译，如有差异，请以英文原文为准。
An a priori model for the reduction of nutation observations: KSV(1994.3) nutation series
Abst.ra.ct! We discuss the formulation of a new nutation series to be used 'in the reduction of modern space geodetic data. The motivation for devel: oping such a series is to develop a nutation series that has smaller short . period errors than the IAU 1980 nutation series and to provide a series that can be used with techniques such as the Global Positioning System (GPS) eo • that have sensitivity to nutations but can directly separate the effects of o M ' nutations from errors in the dynamical force models that effect the satellite ^ to ,$• orbits. A modern nutation series should allow the errors in the force models ^ *o
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