测绘通报 ›› 2019, Vol. 0 ›› Issue (2): 91-94,112.doi: 10.13474/j.cnki.11-2246.2019.0050

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Plane coordinate conversion methods and precision analysis in consideration of topographic relief

MA Haiying1, HU Yueming2,3,4,5,6, YAO Chaolong2, FAN Yanan2,7, HU Bixia8, ZHANG Wei8   

  1. 1. Delingha Bureau of Land and Resources, Delingha 817000, China;
    2. College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China;
    3. Key Laboratory of the Ministry of Land and Resources for Construction Land Transformation, South China Agricultural University, Guangzhou 510642, China;
    4. Guangdong Provincial Key Laboratory of Land Use and Consolidation, South China Agricultural University, Guangzhou 510642, China;
    5. Guangdong Province Land Information Engineering Technology Research Center, South China Agricultural University, Guangzhou 510642, China;
    6. Agriculture and Animal Husbandry, Qinghai University, Xining 810016, China;
    7. South China Academy of Natural Resources Science and Technology, Guangzhou 510642, China;
    8. Qinghai Youyuan Spatial Information Technology Co., Ltd., Xining 810008, China
  • Received:2018-10-23 Online:2019-02-25 Published:2019-03-05

Abstract:

The precision of coordinate conversion is impacted by various factors, such as conversion methods, the number and distribution of public points, and topography. Taking mining right inspection data in Qinghai plateau as an example, this paper made plane coordinate transformation using four parameters model and the quadratic surface model. The impacts of the selection of public points on coordinate transformation in undulate terrain and the features of the two plane coordinate transformation methods were explored. The results of this study provided helpful information for the related engineering applications.

Key words: coordinate transformation, topographic relief, conversion model, precision analysis

CLC Number: