A research of consistencies and progresses of geoid models in Turkey
A research of consistencies and progresses of geoid models in Turkey
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DOI：
10.1007/s12517-015-2098-7
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发表时间：
2015
影响因子：
--
通讯作者：
N. Yilmaz;L. Çakir
中科院分区：
文献类型：
--
作者：
N. Yilmaz;L. Çakir
迄今为止，土耳其已经确定了一些具有各种数据和名称的大地水准面。在本文中，所有土耳其大地水准面进行了审查。为此目的，10个当地的大地水准面模型进行了检查。它们是1976年土耳其大地水准面（TG-76）、土耳其大地水准面-1991（TG-91）、土耳其多普勒大地水准面-1992（TDG-92）、土耳其伪WGS 84多普勒大地水准面-1992（TPDG-92）、土耳其天文大地水准面-1994（TAG-94）、土耳其GPS/水准大地水准面、更新的土耳其大地水准面-1999（TG-99 A）、土耳其大地水准面-2003（TG-03）、土耳其大地水准面-2009（TG-09）和土耳其混合大地水准面-2009（THG-09）。在所进行的数值应用中，选择了土耳其国家基本全球定位系统网络的30个测试基准，并计算了这些点上每个大地水准面模型的大地水准面高度。随后，所有的模型已经相互比较的标准的基础上，他们的发展和大地水准面的高度差已经计算出使用本地模型在测试点。通过这些比较，探讨了各种大地水准面模型之间不一致的原因，同时确定了它们的总体精度。
A number of geoids with various data and names have been determined up to present day in Turkey. In this paper, all Turkish geoids have been reviewed. For this purpose, ten local geoid models have been examined. These are 1976 Turkish Geoid (TG-76), Turkish Geoid-1991 (TG-91), Turkish Doppler Geoid-1992 (TDG-92), Turkish PseudoWGS84Doppler Geoid-1992 (TPDG-92), Turkish Astrogeodetic Geoid-1994 (TAG-94), Turkish GPS/Leveling Geoid, Updated Turkish Geoid-1999 (TG-99A), Turkish Geoid-2003 (TG-03), Turkish Geoid-2009 (TG-09), and Turkish Hybrid Geoid-2009 (THG-09). Within the numerical applications carried out, 30 test benchmarks of the Turkish National Fundamental GPS Network have been selected and geoid heights from each geoid model over these points have been calculated. Later, all of the models have been compared with each other in terms of the criteria based on their developments and geoid height differences have been calculated using local models at the test points. Through these comparisons, the causes of the inconsistencies between the various geoid models are explored while their overall accuracy is determined as well.