本文選題：CGCS + 坐標(biāo)系統(tǒng)�。� 參考：《測繪學(xué)報》2017年10期

【摘要】：主要從技術(shù)實現(xiàn)和維持方面討論了我國CGCS2000框架與當(dāng)前ITRF框架的不同。隨著空間技術(shù)的進(jìn)步,特別是我國自主的北斗衛(wèi)星第三代衛(wèi)星將實現(xiàn)信號的全球覆蓋,發(fā)展以北斗衛(wèi)星為主的毫米級全球基準(zhǔn)將是我國基準(zhǔn)發(fā)展的未來目標(biāo)。毫米級站點(diǎn)坐標(biāo)涉及兩個因素:一是地球質(zhì)心變化反演;二是站點(diǎn)的非線性運(yùn)動建模。本文就國際上采用的地心反演方法進(jìn)行了討論、分析、比較。非線性運(yùn)動建模部分重點(diǎn)介紹了奇異譜非線性建模技術(shù),此方法相比地球物理效應(yīng)分析建模方法有很明顯的優(yōu)勢,可為我國CGCS2000框架點(diǎn)非線性運(yùn)動維持提供依據(jù)。
[Abstract]:This paper discusses the differences between CGCS2000 framework and current ITRF framework in terms of technical implementation and maintenance.With the development of space technology, especially the third generation satellite of Beidou satellite, the global coverage of signal will be realized, and the development of millimeter scale global datum based on Beidou satellite will be the future goal of the development of Chinese standard.The millimeter site coordinates involve two factors: one is the inversion of the earth's centroid change, the other is the nonlinear motion modeling of the station.This paper discusses, analyzes and compares the geocentric inversion methods adopted internationally.In the part of nonlinear motion modeling, the singular spectrum nonlinear modeling technique is introduced. This method has obvious advantages over geophysical effect analysis modeling method, and can provide the basis for nonlinear motion maintenance of CGCS2000 frame points in China.
【作者單位】： 中國測繪科學(xué)研究院;
【基金】：國家重點(diǎn)研發(fā)計劃(2016YFB0501405)~~
【分類號】：P227

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本文編號：1762584