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| Study on Application of Mapping Technology with Satellite Images in Railway Survey and Design |
| WANG Guo-chang |
| China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China |
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Abstract Research purposes：In recent years, resolution of satellite images has been improved gradually with the development of satellite remote sensing technology. In particular, the acquisition of satellite stereograph provides a new data source for aerial mapping. At the same time, effective technological measures and reasonable mapping methods are required on the base of theoretical study and accuracy analysis, to achieve the satellite image mapping technology servicing the railway survey and design.
Research conclusions：The researches and tests on Mianyang-Chengdu-Leshan Railway, Lanzhou-Chongqing Railway, Chengdu-Lanzhou Railway and so on prove that IKONOS Satellite images with resolution of 1.0 meter can basically meet the topographic mapping requirement of a scale of 1∶2 000. IRS-P5 Satellite images with resolution of 2.5-meter can meet the topographic mapping accuracy requirements of a scale of 1∶10 000. Satellite images with resolutions from 0.6 to 1.0 meter and 2.5-meter can respectively meet the plane requirements of topographic map revision for a scale of 1∶2 000 and 1∶10 000.
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Received: 02 May 2009
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2010, Vol. 27 
