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首页> 外文期刊>Journal of geovisualization and spatial analysis >Calculation and Analysis of Multi-scale Earth Gravity Field Parameters Based on Self-developed EIGEN-5C Model Software
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Calculation and Analysis of Multi-scale Earth Gravity Field Parameters Based on Self-developed EIGEN-5C Model Software

机译：基于自主研发EIGEN-5C模型软件的多尺度地球重力场参数计算与分析

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摘要

There are many calculation model schemes with practical value for calculating the critical parameters of the Earth's gravity field. However, the research work of systematically using the EIGEN-5C model for multi-scale inversion of the earth's gravity field needs to be supplemented. To solve the above problems, this study uses the 360-order EIGEN-5C model to calculate the four parameters of the Earth's gravity field: disturbance potential, geoid height, gravity anomaly, and gravity disturbance. This study first calculates the normalized-associated Legendre function, reads the coefficients of the EIGEN-5C gravity field model, then calculates the normal gravity and converts the geodetic coordinate system into the spherical coordinate system. On this basis, the spherical harmonic series expansion of the gravity field parameters is carried out. Through experiments, it is found that the calculation process introduced in this study can better calculate and express the critical parameters of the multi-scale Earth's gravity field. For the local scale, the researchers calculated from the experimental areas of low, medium, and high latitudes. For the global scale, the researchers also calculated the above indicators. The calculation results can sufficiently express the geophysical situation of the study area. Additionally, to better realize the above process, we creatively developed a set of software for calculating the parameters of the Earth's gravity field based on the EIGEN-5C model. The software can calculate all the above key parameters of gravity field, and realize the visual expression of the results. All in all, this study systematically explains using the EIGEN-5C model to carry out the inversion and result in the expression of multi-scale Earth's gravity field parameters. And our self-developed software has a certain reference value for the research field of geographic information mapping technology.
机译：有很多计算模型方案实用价值计算的关键参数的地球重力场。系统使用的研究工作EIGEN-5C模型的多尺度反演地球的重力场需要补充。为了解决上述问题,本研究使用360 - EIGEN-5C模型来计算四个订单地球的重力场参数:扰动的潜力,大地水准面高度,重力异常、重力扰动。首先计算normalized-associated勒让德函数,读取的系数EIGEN-5C重力场模型,然后计算正常重力和转换大地坐标系统到球面坐标系统。级数展开的重力场参数执行。计算过程介绍了学习可以更好地计算和表达多尺度地球的关键参数重力场。研究人员计算出实验地区的低、中、高纬度地区。全球范围内,研究人员还计算了以上指标。充分表达的地理情况研究区。上述过程中,我们创造性地开发了一个集软件计算的参数基于EIGEN-5C地球的重力场模型。重力场的关键参数,并实现视觉表达的结果。本研究系统地解释了使用EIGEN-5C模型进行反演导致多尺度地球的表达重力场参数。软件有一定的参考价值地理信息映射的研究领域技术。

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