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Practical Research of IKONOS-2 Geopositioning and Its Accuracy in Xizang of China 被引量:1
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作者 CHEN Chujiang LI Deren ZHU Qing 《Geo-Spatial Information Science》 2005年第1期33-38,共6页
This paper presents the studies of the refining of IKONOS-2 RPC,the transform of the datum,the mode of the control point distribution and the method of IKONOS stereo triangulation,so that IKONOS imagery can be used to... This paper presents the studies of the refining of IKONOS-2 RPC,the transform of the datum,the mode of the control point distribution and the method of IKONOS stereo triangulation,so that IKONOS imagery can be used to collect the precise geospatial data and produce the large scale map.The transform between the IKONOS-2 image space and the national coordinate system based on the RPC have been developed,and the results of block adjustment with various control schemes in a practical project near Himalayas have been examined and analysed.The encouraging results of high positioning accuracy have been obtained. 展开更多
关键词 IKONOS-2 satellite imagery high resolution ACCURACY spatial informationscience
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Multiformity of Optical Quantum Coherence Systems with Y and Inverted Y-type Schemes
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作者 刘晓东 孟冬冬 +2 位作者 张森林 陶万军 戚桢 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第8期273-277,共5页
Y and inverted Y-type four-level schemes for optical quantum coherence systems,which may be intuitivelyconsidered to be very simple,have not been studied intensively till now.In this paper,we present the multiformity ... Y and inverted Y-type four-level schemes for optical quantum coherence systems,which may be intuitivelyconsidered to be very simple,have not been studied intensively till now.In this paper,we present the multiformity ofthese two types of schemes by considering that they can be classified into nine possible level styles as the second-ordersub-schemes using laser fields.Further we point out the complexity of their more than one hundred realistic configurationsas the third-order four-level sub-schemes that may appear in the optical quantum coherence experiments.Throughoutthis paper we review which configurations have been studied in some research aspects and which ones not,accordingto our knowledge,in order to be propitious to next steps of theoretical and experimental investigations,especially forapplications in the fields of quantum optics,quantum information science,laser spectroscopy,and so on. 展开更多
关键词 quantum coherence level configuration four-level scheme quantum optics quantum informationscience
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