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Combining datum-free normal equation systems and solutions with full covariance information for upco
[会议论文] 作者：Andreas Iddink,Thomas Artz,Axel Nothnagel,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
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Combining datum-free normal equation systems and solutions with full covariance information for upco
[会议论文] 作者：Andreas Iddink,Thomas Artz,Axel Nothnagel,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
Combination approaches within the International VLBI Service for Geodesy and Astrometry (IVS) are solely performed on the level of datum-free normal equations (NEQs).The procedure is used to compute t...
[会议论文] 作者：Sebastian Halsig,Thomas Artz,Judith Leek,Axel Nothnagel,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
Refractivity variations in the neutral atmosphere are the major error source in the observations of Very Long Baseline Interferometry (VLBI).They represent the...
[会议论文] 作者：Axel Nothnagel,Erik Heinz,Anne Springer,Thomas Artz,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
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[会议论文] 作者：Axel Nothnagel,Erik Heinz,Anne Springer,Thomas Artz,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
The main reflector of a radio telescope is always subject to variable gravitational forces when tilted in different elevation angles.Depending on size and stiffness,the paraboloid is deformed and the...
[会议论文] 作者：Bill Petrachenko,Dirk Behrend,John Gipson,Dan MacMillan,Hayo Hase,Chopo Ma,Arthur Niell,Axel Nothnagel,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
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[会议论文] 作者：Bill Petrachenko,Dirk Behrend,John Gipson,Hayo Hase,Chopo Ma,Dan MacMillan,Arthur Niell,Axel Nothnagel,
来源：The International VLBI Service for Geodesy and Astrometry (I 年份：2014
Over the past several years,the VGOS broadband system has been under development;it is currently undergoing advanced testing.At the same time,commitments have been made for a number of antenna project...
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