| 河北CORS和EGM2008模型在RTK三维水深测量中的应用 |
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| 引用本文： | 王建忠,王玉龙,李睿智.河北CORS和EGM2008模型在RTK三维水深测量中的应用[J].北京测绘,2020(5):671-674. |
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| 作者姓名： | 王建忠 王玉龙 李睿智 |
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| 作者单位： | 河北省地矿局第八地质大队 |
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| 摘 要： | 将河北CORS和EGM2008重力场模型应用在RTK三维水深测量工作中,不受控制点个数和位置分布限制,无需求取七参数,可直接获取2000国家大地坐标系平面定位成果。另外,利用EGM2008模型计算出测区内少数点的高程异常后,可通过二次多项式曲面模型进行高程拟合,求出全部测点高程异常,最终得到正常高。通过在渤海湾某水深测量项目中的验证,结果表明该方法简单可行,其精度可达到规范要求。
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| 关 键 词： | 连续运行参考站(CORS) EGM2008模型 载波相位差分技术(RTK)三维水深测量 高程异常 高程拟合 |
Application of Hebei CORS and EGM2008 Model in RTK Three-dimensional Water Depth Measurement |
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| WANG Jianzhong,WANG Yulong,LI Ruizhi.Application of Hebei CORS and EGM2008 Model in RTK Three-dimensional Water Depth Measurement[J].Beijing Surveying and Mapping,2020(5):671-674. |
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| Authors: | WANG Jianzhong WANG Yulong LI Ruizhi |
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| Institution: | (The 8th Geological Brigade,Hebei Geological Prospecting Bureau,Qinhuangdao Hebei 066001,China) |
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| Abstract: | In this paper,The Hebei CORS and EGM2008 earth gravitational model are applied to RTK three-dimensional bathymetric survey,,which are not limited by the number and position distribution of control points,and can directly obtain the planar positioning results of 2000 national geodetic coordinate system without obtaining seven parameters.In addition,after using EGM2008 model to calculate the elevation anomalies of a few points in the survey area,the elevation fitting can be carried out through quadratic polynomial surface model to obtain the elevation anomalies of all survey points and finally obtain the normal height.The verification in a bathymetric survey project in Bohai Bay shows that the method is simple and feasible,and its accuracy can meet the specification requirements. |
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| Keywords: | Continuously Operating Reference Stations(CORS) EGM2008 model Real-Time Kinematic(RTK)three-dimensional(3D)bathymetric survey technology elevation anomaly height fitting |
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