基于Internet的VRS/RTK定位算法模型及实验研究

基金项目: 国家自然科学基金资助项目(40271091);国家教育部高等学校博士学科点专项基金资助项目(20040613025);国家教育部优秀青年教师资助计划资助项目(2003109)

详细信息

Internet Based VRS/RTK Positioning Algorithm and Experiment

¹ Center of Geomatic Research,Southwest Jiaotong University,111 North 1 Section,Erhuan Road,Chengdu 610031,China;² Research Center of GNSS,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 国家自然科学基金资助项目(40271091);国家教育部高等学校博士学科点专项基金资助项目(20040613025);国家教育部优秀青年教师资助计划资助项目(2003109)

摘要: 针对VRS的关键技术,系统地探讨了基于Internet的VRS/RTK定位的算法模型,并结合GPS观测网络的实际和自主开发的GPS虚拟参考站软件系统Venus1.0进行了分析、实验、验证,取得了满意的结果。通过实际网络测试表明,网内水平精度1-3 cm,垂直精度1-4.5 cm;网外距离相关误差的相关性逐步减弱,定位精度也随之下降,但VRS/RTK定位在网络覆盖范围之外的一定范围(如成都地区可达20 km),仍然可以实现cm级定位服务。
- GPS /
- 虚拟参考站(VRS) /
- 服务网络 /
- RTK定位
Abstract: The methodology of VRS/RTK positioning,network correction generation approach and the Internet-based VRS data communication is presented.Field tests are presented to evaluate the performance of the proposed system.The results demonstrate that Inter net-based VRS RTK positioning can be achieved to better than 2.5 cm accuracy in horizontal position,and the height accuracy is in the range of 1 to 4.5 cm within the network.Distance-dependent errors,e.g.the ionospheric and troposhpheric delay errors,cannot been modeled effectively when rover receiver goes outside of the reference-station-network coverage area(up to 20 km in Chengdu,China),and the positioning accuracy degrades to dm level.
- GPS /
- virtual reference station(VRS) /
- service network /
- real-time kinematic(RTK) positioning