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基于测点实测高程修正重力中区地改误差评价方法的探讨

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耿涛, 杜辉, 冯治汉. 2021. 基于测点实测高程修正重力中区地改误差评价方法的探讨. 物探与化探, 45(6): 1521-1529. doi: 10.11720/wtyht.2021.0289
引用本文: 耿涛, 杜辉, 冯治汉. 2021. 基于测点实测高程修正重力中区地改误差评价方法的探讨. 物探与化探, 45(6): 1521-1529. doi: 10.11720/wtyht.2021.0289
shu
GENG Tao, DU Hui, FENG Zhi-Han. 2021. Discussion on the improvement of the error evaluation method in gravity intermediate area terrain correction based on the measured elevation. Geophysical and Geochemical Exploration, 45(6): 1521-1529. doi: 10.11720/wtyht.2021.0289
Citation: GENG Tao, DU Hui, FENG Zhi-Han. 2021. Discussion on the improvement of the error evaluation method in gravity intermediate area terrain correction based on the measured elevation. Geophysical and Geochemical Exploration, 45(6): 1521-1529. doi: 10.11720/wtyht.2021.0289
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基于测点实测高程修正重力中区地改误差评价方法的探讨

  • 1.中国地质调查局 西安地质调查中心,陕西 西安 710054;

  • 2.西北地质科技创新中心,陕西 西安 710054

  • 基金项目:

    国家重点研发计划项目

    典型覆盖区航空地球物理技术示范与处理解释软件平台开发(2017YFC0602200)

    第五课题

    北秦岭华阳川地区隐伏铀矿空—

    地—

    井协同勘查技术示范研究(2017YFC0602205)

    中国地质调查局项目

    青海1

    25万门源回族自治县幅、山丹县幅基础地质调查修测(青海1

    25万门源回族自治县幅、山丹县幅区域重力调查)(1212011221037)

详细信息
    作者简介: 耿涛(1969-),男,1992年毕业于成都地质学院应用地球物理系,教授级高级工程师,主要从事区域地球物理调查和矿产地球物理勘查方面的工作。Email:gengtao926@163.com

  • 中图分类号: P631

Discussion on the improvement of the error evaluation method in gravity intermediate area terrain correction based on the measured elevation

  • 1. Xi'an Center of Geological Survey of CGS, Xi'an 710054,China;

  • 2. Northwest Geological Science and Technology Innovation Center, Xi'an 710054,China

    摘要
  • 现阶段的重力调查工作中,在进行重力中区地形改正的精度评价时,基本都回避了一个重要的影响因素——重力中区地形改正时所采用数字高程模型(DEM)本身的精度,因此,得出的重力中区地形改正均方误差其实是不全面的。本文在分析DEM数据误差并通过实际资料对比的基础上,提出了利用重力测点实测高程值对重力中区地形改正所用的DEM数据精度进行评价的方法,探讨了如何评价DEM误差引起的重力中区地形改正误差,目的是获得更接近真实情况的重力中区地形改正精度。
    In the current gravity survey work, the accuracy of digital elevation model (DEM) used in terrain correction is basically avoided when evaluating the accuracy of terrain correction in gravity intermediate area. Therefore, the mean square error of terrain correction calculated by this data in gravity intermediate area is not comprehensive. Based on the analysis of DEM data error and the comparison of actual data, this paper puts forward a method to evaluate the accuracy of DEM data used for terrain correction in the intermediate area of gravity by using the measured elevation values of gravity measuring points, and discusses how to evaluate the error of terrain correction in the intermediate area of gravity caused by DEM error, so as to obtain the accuracy of terrain correction in the intermediate area of gravity closer to the real situation.
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出版历程
收稿日期:  2021-02-19
修回日期:  2021-12-20
刊出日期:  2021-12-21

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