| 利用CORS的3DSurs系统高精度定位技术研究 |
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| 引用本文： | 郑作亚, 卢秀山, 张晨晰, 于志刚. 利用CORS的3DSurs系统高精度定位技术研究[J]. 武汉大学学报 ( 信息科学版), 2010, 35(9): 1039-1043. |
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| 作者姓名： | 郑作亚 卢秀山 张晨晰 于志刚 |
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| 作者单位： | 1中国测绘科学研究院大地测量与地球动力学研究所,北京市北太平路16号,100039;2海岛(礁)测绘技术国家测绘局重点实验室,青岛市前湾港路579号,266510;3山东科技大学测绘科学与工程学院,青岛市前湾港路579号,266510;4山东科技大学资源与土木工程系,泰安市岱宗大街223号,271019 |
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| 基金项目： | 国家自然科学基金资助项目(40904001)；中国博士后科学基金资助项目(20080440049)；国家测绘局重点实验室基金资助项目(2009A01) |
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| 摘 要： | 针对3DSurs系统在城市空间数据采集与定位过程中利用静态相对定位模式时存在的基准站设置、距离限制等局限性,提出了利用CORS的3DSurs系统高精度定位技术方案。首先,进行流动站(3DSurs)的坐标概略计算;然后,解算流动站的综合误差改正值;最后,进行流动站的精确坐标计算。以青岛CORS为例,分析了3DSurs系统的高精度定位结果。结果表明,基于CORS的3DSurs高精度定位点位精度优于10cm,能够满足城市空间数据采集与定位精度的要求。
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| 关 键 词： | GPS/CORS 3DSurs 综合误差改正 概略坐标 虚拟参考站 |
| 收稿时间： | 2010-07-09 |
| 修稿时间： | 2010-07-09 |
3DSurs Positioning Technology with CORS and Its Application |
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| ZHENG Zuoya, LU Xiushan, ZHANG Chenxi, YU Zhigang. 3DSurs Positioning Technology with CORS and Its Application[J]. Geomatics and Information Science of Wuhan University, 2010, 35(9): 1039-1043. |
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| Authors: | ZHENG Zuoya LU Xiushan ZHANG Chenxi YU Zhigang |
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| Affiliation: | 1Institute of Geodesy and Geodynamics, Chinese Academy of Surveying and Mapping, 16 Beitaiping Road, Beijing 100039, China;(2 Key Laboratory of Surveying and Mapping Technology on Island and Reef of SBSM, 579 Qianwangang Road, Qingdao 266510, China;(3 College of Geodesy and Geomatics, Shandong University of Science and Technology, 579 Qianwangang Road, Qingdao 266510, China;(4 Department of Resources and Civil Engineering, Shandong University of Science and Technology, 223 Daizong Street, Tai’an 271019, China |
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| Abstract: | City spatial data acquisition is the key to digital city. In allusion to the limits of traditional differential positioning model with 3DSurs, and with the development of regional continuous operational reference system or stations (CORS), 3DSurs precise positioning technique based on CORS is put forward. Firstly, we compute the approximate coordinate of 3DSurs. Then, we calculate the synthetical error correction of 3DSurs from CORS. At last, we calculate its coordinate precisely based on the front two steps. Taking the data from QDCORS for example to analyze the positioning precision of 3DSurs based on CORS, we find that the positioning precision is prior to 10 cm, and it can meet the need of city spatial data acquisition and positioning. |
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| Keywords: | CORS 3DSurs synthetical error correction approximate coordinates virtual reference stations |
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