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

• 学术研究 •    下一篇

BDS+GPS手持机支持下的网格伪距差分定位

周万振1,2, 秘金钟2, 李得海2, 方书山2, 张晶晶3, 陈振4, 张涛1,2   

  1. 1. 山东科技大学, 山东 青岛 266590;
    2. 中国测绘科学研究院, 北京 100830;
    3. 四川省第一测绘工程院, 四川 成都 610100;
    4. 青岛市勘察测绘研究院, 山东 青岛 266000
  • 收稿日期:2016-06-29 出版日期:2017-02-25 发布日期:2017-03-01
  • 作者简介:周万振(1991-),男,硕士生,主要研究方向为GNSS差分定位。E-mail:wzzhou530@163.com
  • 基金资助:

    国家自然科学基金(41304030);科技部863计划(2015AA124001);国家重点研发计划(2016YFB0502105;2016YFB0501801);北斗分析中心(GFZX0301040308-06);中国测绘科学研究院基本科研业务费(7771604);国家测绘地理信息局科技项目(2016KJ0200);四川省北斗实时亚米级智能位置服务关键技术研究项目(2016KJ0205)

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

摘要:

我国各省CORS站建设逐步完善,以及我国BDS卫星导航系统在亚太区域提供服务,促进了BDS+GPS双模融合伪距差分定位的研究和发展。目前,在PC机上伪距差分定位早已实现,且算法也已经比较成熟,但在移动终端上进行BDS+GPS双模融合伪距差分定位向用户提供服务方面还比较薄弱,针对这一问题,本文提出了将网格伪距差分定位算法嵌入到手持机,并且实现了手持机实时网格伪距差分定位。本文阐述了方法原理并进行了车载试验分析,结果表明,在与TBC软件动态解算结果作为已知准确值的外符合精度方面,手持机BDS+GPS双模融合网格伪距差分定位结果的水平精度为0.522 1 m,在水平方向上可以达到亚米级定位精度。

关键词: 手持机, 网格中心点改正数, 伪距差分, BDS+GPS双模融合

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

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