中国高精度速度场建立方法及其在框架转换中的应用

杨瀚融, 厉芳婷, 王恒毅, 魏以宽, 陈华, 姜卫平

杨瀚融, 厉芳婷, 王恒毅, 魏以宽, 陈华, 姜卫平. 中国高精度速度场建立方法及其在框架转换中的应用[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20220772
引用本文: 杨瀚融, 厉芳婷, 王恒毅, 魏以宽, 陈华, 姜卫平. 中国高精度速度场建立方法及其在框架转换中的应用[J]. 武汉大学学报 ( 信息科学版). DOI: 10.13203/j.whugis20220772
Yang Hanrong, Li Fangting, Wang Hengyi, Wei Yikuan, Chen Hua, Jiang Weiping. Method of Building High Precision Velocity Model in China and Its Application in Frame Transformation[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20220772
Citation: Yang Hanrong, Li Fangting, Wang Hengyi, Wei Yikuan, Chen Hua, Jiang Weiping. Method of Building High Precision Velocity Model in China and Its Application in Frame Transformation[J]. Geomatics and Information Science of Wuhan University. DOI: 10.13203/j.whugis20220772

中国高精度速度场建立方法及其在框架转换中的应用

基金项目: 

国家重点研发计划项目(2022YFC3005502)、湖北省自然资源厅科技资助项目(ZRZY2022KJ29)。

详细信息
    作者简介:

    杨瀚融,硕士生,主要研究方向为GNSS算法。2018302141239@whu.edu.cn

    通讯作者:

    陈华,博士,副教授。ttchen@whu.edu.cn

Method of Building High Precision Velocity Model in China and Its Application in Frame Transformation

  • 摘要: 高精度GNSS定位成果一般在国际地球参考框架下表达,但是中国测绘成果要求采用2000国家大地坐标系,高精度速度场模型是实现两者转换的关键。目前大多研究没有考虑不同函数拟合方法在不同速度方向上的表现,也没有深入研究同一方法不同的参数设置对速度场构建的影响。为此,本文根据中国大陆地壳运动监测网络的260多个连续运行基准站和中国境内及周边地区的90个IGS站数据,基于张力样条函数法和克里金法,分别采用不同的参数设置构建了覆盖全国的1毫米级高精度速度场模型,确立了在E、N、U三方向精度最高的3种方法,并以这3种方法构建组合速度场模型,将该模型应用于全国范围CORS站点的ITRF2014和CGCS2000坐标转换。结果表明,建立的组合速度场整体转换精度约为2.3cm,单一方向分量的转换精度维持在1.3cm左右,能实现中国境内大范围测绘成果厘米级精度的基准转换。
    Abstract: Objectives : High precision GNSS positioning results are generally expressed under the International Terrestrial Reference Frame, but China's surveying and mapping results require the use of the China Geodetic Coordinate System 2000. High precision velocity field model is the key to achieve the conversion between the ITRF2014 and CGCS2000. At present, most studies use a single method to build the velocity field model, without in-depth study of the impact of different parameter settings on the construction of the velocity field, and without discussion of the performance of different methods in different speed directions. Methods : For this reason, based on the data of 260 continuously operating reference stations of the CMONOC and 90 IGS stations within and around China, and based on the tension spline function method and the Kriging method. This paper uses different parameter settings to build a 1-mm high-precision velocity field model covering the country, establishes three methods with the highest accuracy in three directions of ENU, and uses these three methods to build a combined velocity field field. The model is applied to the coordinate transformation of ITRF2014 and CGCS2000 of CORS stations nationwide. Results : The research results indicate that the overall conversion accuracy of the combined velocity field established in this article is about 2.3cm, and the conversion accuracy of a single directional component is maintained at around 1.3cm, which can achieve benchmark conversion of centimeter level accuracy for large-scale surveying and mapping results in China. Conclusions : Based on experiments, this article concludes that constructing the optimal component velocity field and forming a combined velocity field through different methods can effectively improve the accuracy of the overall velocity field model and be further applied in practice.
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出版历程
  • 收稿日期:  2023-07-03
  • 网络出版日期:  2023-09-03

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