SRTM2gravity高分辨率地形重力模型在大地水准面计算中的精度评价

IF 1.2 4区地球科学 Q3 ENGINEERING, CIVIL

Survey Review Pub Date : 2023-03-06 DOI:10.1080/00396265.2023.2183332

B. Erol, Muhammed Raşit Çevikalp, S. Erol

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引用次数: 0

摘要

本文对SRTM2gravity高分辨率地形重力模型的精度进行了验证。对比研究区平面近似经典公式计算的完整布格异常数据和球面近似srtm2重力模型计算的完整布格异常数据。利用每个布格异常数据集恢复的自由空气异常计算的两个大地水准面模型相互比较，并在GPS/水准点进行验证。在该地区的山区，两个大地水准面模型相差高达4厘米。在GPS/水准验证之后，大地水准面模型提供了几乎相同的精度(~ 4.2 cm)。总之，srtm2重力模型数据的精度足以用于重力减小，并且推荐作为该地区重力插值/网格化和大地水准面确定目的的现成产品。

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Accuracy assessment of the SRTM2gravity high-resolution topographic gravity model in geoid computation

The accuracy of the SRTM2gravity high-resolution topographic gravity model is tested in this study. Complete Bouguer anomaly datasets calculated with classical formula in planar approximation and using the SRTM2gravity model in spherical approximation were compared in the study area. Two geoid models computed using free-air anomalies, which were restored from each Bouguer anomaly datasets, were compared to each other and they were validated at GPS/leveling points. In the mountainous part of the area, two geoid models differ by up to 4 cm. Following GPS/leveling validations, the geoid models provided nearly the same accuracy (∼4.2 cm). In conclusion, the accuracy of the SRTM2gravity model data was found sufficient to use in gravity reduction and it is recommended as a ready-to-use product in the area for gravity interpolation/gridding and geoid determination purposes.

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来源期刊

Survey Review 地学-地球科学综合

CiteScore

3.50

自引率

6.20%

发文量

审稿时长

6 months

期刊介绍： Survey Review is an international journal that has been published since 1931, until recently under the auspices of the Commonwealth Association of Surveying and Land Economy (CASLE). The journal is now published for Survey Review Ltd and brings together research, theory and practice of positioning and measurement, engineering surveying, cadastre and land management, and spatial information management. All papers are peer reviewed and are drawn from an international community, including government, private industry and academia. Survey Review is invaluable to practitioners, academics, researchers and students who are anxious to maintain their currency of knowledge in a rapidly developing field.