Bulletin of Surveying and Mapping ›› 2023, Vol. 0 ›› Issue (1): 113-119.doi: 10.13474/j.cnki.11-2246.2023.0019

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Analysis on spatio-temporal accessibility of medical services supported by real-time traffic data

XU Hao1,2,3,4, QIAO Qinghua4, LI Yanhong5, CHEN Guoling6, LIU Jia4, GAN Lin1,2,3,4   

  1. 1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring, Lanzhou 730070, China;
    3. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China;
    4. Chinese Academy of Surveying and Mapping, Beijing 100036, China;
    5. School of Resource and Environmental Sciences, Wuhan University, Wuhan 430079, China;
    6. Zhongce Guojian(Beijing) Science and Technology Limited Liability Company, Beijing 100036, China
  • Received:2022-02-28 Published:2023-02-08

Abstract: In view of the problem that the existing urban medical service accessibility analysis methods do not consider the medical preference,resulting in a large difference between the calculation results and the actual feelings of residents,this paper proposes a medical service spatio-temporal accessibility analysis method considering the medical time cost and distance cost preference,and takes the central urban area of Wuhan as an example. The experimental results show that research methods fully consider the impact of real traffic conditions on accessibility,and comprehensively consider the impact of traffic distance and travel time on residents' medical choice. At the same time,distance preference has a significant impact on the analysis results. When considering the actual road conditions,the accessibility shows a significant dynamic change trend in a day. On one hand,this method can reflect the difference of accessibility at different times. On the other hand,it emphasizes the preference of residents' time cost and distance cost. Compared with single time cost or distance cost,it has significant changes,and the analysis results are more in line with the reality.

Key words: medical service, spatio-temporal accessibility, Gaussian two step floating catchment area method, Amap

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