ZHANG Xin, YANG Aiming, XU Qifeng, JIANG Benhai. Key Technology on Establishment of an Independent CoordinateSystem for Water Diversion Project in Central Yunnan[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1047-1051. DOI: 10.13203/j.whugis20130502
Citation: ZHANG Xin, YANG Aiming, XU Qifeng, JIANG Benhai. Key Technology on Establishment of an Independent CoordinateSystem for Water Diversion Project in Central Yunnan[J]. Geomatics and Information Science of Wuhan University, 2014, 39(9): 1047-1051. DOI: 10.13203/j.whugis20130502

Key Technology on Establishment of an Independent CoordinateSystem for Water Diversion Project in Central Yunnan

Funds: Hubei Postdoctoral Innovation Foundation.
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  • Author Bio:

    ZHANG Xin,engineer,postdoctoral,specializes in geodesy and surveying engineering research.

  • Received Date: September 16, 2014
  • Revised Date: September 04, 2014
  • Published Date: September 04, 2014
  • Objective A water diversion project in Central Yunnan exhibited several typical characteristics of theoverall survey region,such as the extraordinarily long span,the high average altitude,and large ele-vation changes.Therefore,difficult to build independent coordinate system for this project.Based onthe theory of projection distortion,we propose a key technology solutions composed of two parts.First,using the 1°projection zone to replace the regular 3°projection zone,Gauss projection distor-tion was effectively controlled.Second,a method for selecting a compensation projection plane wasdeducted to satisfy the needs of this water diversion project.An optimized solution for this project wasfound using the proposed independent coordinate system and efficiently controlled,the maximum com-prehensive deformation for this water diversion project in Central Yunnan.
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