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[期刊论文] 作者：WU Yi,YI Dongyun,
来源：中国科学E辑（英文版） 年份：2004
It is proved that the curvature of nonlinear model can be reduced to zero by increasing measured data for a class of nonlinear regression models. The result is...
Reduced Dynamic Orbit Determination Using Differenced Phase in Adjacent Epochs for Spaceborne Dual-f
[期刊论文] 作者：GU Defeng,YI Dongyun,
来源：城市道桥与防洪 年份：2011
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者：TU Jia,GU Defeng,WU Yi,YI Dongyun,
来源：城市道桥与防洪 年份：2012
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生、测量监控等方面人手,介绍了S226海滨大桥...
[期刊论文] 作者：Lai Yuwang,Liu Junhong,Ding Yonghe,Gu Defeng,Yi Dongyun,,
来源：Chinese Journal of Aeronautics 年份：2014
Space Technology Experiment and Climate Exploration(STECE) is a small satellite mission of China for space technology experiment and climate exploration. A new...
Basic performance of BeiDou-2 navigation satellite system used in LEO satellites precise orbit deter
[期刊论文] 作者：Liu Junhong,Gu Defeng,Ju Bing,Yao Jing,Duan Xiaojun,Yi Dongyun,,
来源：Chinese Journal of Aeronautics 年份：2014
The visibility for low earth orbit(LEO) satellites provided by the BeiDou-2 system is analyzed and compared with the global positioning system(GPS). In addition...
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