测绘通报 ›› 2017, Vol. 0 ›› Issue (2): 1-5.doi: 10.13474/j.cnki.11-2246.2017.0037

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Research of Grid Pseudo-range Differential Positioning Based on BDS+GPS Handset

ZHOU Wanzhen1,2, BEI Jinzhong2, LI Dehai2, FANG Shushan2, ZHANG Jingjing3, CHEN Zhen4, ZHANG Tao1,2   

  1. 1. Geomatics College, Shandong University of Science and Technology, Qingdao 266590, China;
    2. Chinese Academic of Surveying and Mapping, Beijing 100830, China;
    3. Sichuan No. 1 Surveying and Mapping Engineering Institute, Chengdu 610100, China;
    4. Qingdao Surveying and Mapping Research Institute, Qingdao 266000, China
  • Received:2016-06-29 Online:2017-02-25 Published:2017-03-01

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Abstract:

The construction of CORS stations in China has been gradually improved and China's BDS satellite navigation system has provided services in the Asia-Pacific region. So the integration of BDS/GPS dual-mode pseudo-range differential positioning research and development is promoted. Now the pseudo-range differential positioning based on personal computer has been realized and the algorithm has also been relatively mature, but the technology based on mobile terminal to provide users with services is still relatively weak. Considering this deficiency, the grid pseudo-range differential positioning algorithm embedded in the handset was proposed, and this thought was achieved. In this paper the principle of this method was introduced and the vehicle test was analysed. Compared with the dynamic TBC results which known as true value, the results showed that the external accord accuracy of test data was 0.522 1 m and could achieve sub-meter accuracy on the horizontal direction.

Key words: handset, the grid center corrections, pseudo-range differential, BDS/GPS dual-mode fusion

CLC Number: