【摘 要】
：
Earth orientation parameters are made of the polar motion, day-to-day variations, nutation and precession, which constitute a description of the parameters of the Earths rotation changes, called as ER
【机 构】
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School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China;Key Laboratory of
【出 处】
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International Symposium & Summer School on Planetary Science
论文部分内容阅读
Earth orientation parameters are made of the polar motion, day-to-day variations, nutation and precession, which constitute a description of the parameters of the Earths rotation changes, called as ERE ERP provides evidence for the relationship between the earth-fixed coordinate system and instantaneous celestial coordinate system, the polar motion parameter as one of the orientation parameters of the Earth, has a very important role in the celestial coordinate system and the Earth coordinate system conversion, but also for orbit determination, deep space geodesy, satellite navigation, etc., In this fields, polar motion play an indispensable function.Earth Orientation Parameters geodynamics also contains a wealth of information.Researching polar motion parameter is also important for the development of geophysics
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