Results of astronomical leveling on the Moscow attraction using a zenith camera

Geodesy and cartography Pub Date : 2024-01-20 DOI:10.22389/0016-7126-2023-1002-12-2-9

M. Murzabekov, V. F. Fateev, D.I. Pleshakov

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Abstract

In this paper, the quasi-geoid elevations along the profile of the Moscow attraction are calculated based on the astronomical leveling method – according to the components of the deflection of vertical, which were measured using the zenith camera of the FSUE "VNIIF-TRI". The length of the profile is approximately 93 km. The error in the final excess of the quasi-geoid for the attraction profile, obtained from the mentioned measurements, was about 13 mm. The results are compared with a digital model of quasi-geoid heights, which has a relative error of ~4 cm in the Moscow region. Juxtaposition of the quasi-geoid elevations gave an average difference of –1,8 cm and its standard deviation of 1,9 cm. The dependence of the quasi-geoid final excess for the attraction profile on the points’ number used (lengths of segments) and the measurement area anomaly were studied. For the Moscow attraction, which is a medium-anomalous region, it was found out that the optimal distance between surveyed points should not exceed 13 km. The method of astronomical leveling using a zenith camera can be used for metrological support and independent control of quasigeoid models obtained through other methods, for example, gravimetric ones

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使用天顶照相机对莫斯科景点进行天文测量的结果

本文基于天文平差法--根据垂直偏转的分量计算莫斯科吸引力剖面上的准地球高程，这些分量是使用 FSUE "VNIIF-TRI "天顶照相机测量的。剖面长度约为 93 公里。根据上述测量结果得出的吸引力剖面准地形的最终过度误差约为 13 毫米。结果与准地球高度数字模型进行了比较，后者在莫斯科地区的相对误差约为 4 厘米。将准地壳高度并列得出的平均差异为-1.8 厘米，标准偏差为 1.9 厘米。研究了景点剖面的准地形最终超差与所用点数（段长）和测量区域异常的关系。对于莫斯科这个中等异常地区的吸引力，研究发现勘测点之间的最佳距离不应超过 13 公里。使用天顶照相机进行天文水准测量的方法可用于计量支持和独立控制通过其他方法（如重力测量方法）获得的准大地水准面模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Geodesy and cartography

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