Analysis of regional geodetic GNSS networks properties built through the relative method. Complete case

Q4 Earth and Planetary Sciences
N. Bovshin
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引用次数: 0

Abstract

In this paper we continue to study the statistical properties of adjusted station coordinates in permanent geodetic networks. Analytical constructing the variance-covariance matrix of the measured vectors redundant set’s coordinates taking into account the covariances between vectors with common stations, is performed. The main attributes of this matrix are shown.Analytical modeling the adjustment of the measured vectors’ redundant set, which has such attributes, is performed. The variance-covariance matrix of the vector network’s adjusted coordinates is obtained and its properties are analyzed. It is shown that at using a simplified method for constructing such network, which neglects correlations between the errors of the measured baselines, the accuracy of its solution is overestimated, but the structure of the covariance matrix does not change. Analytical modeling of the network’s behavior in time is done, taking into account its possible internal dynamics, i.e. temporal changes of the geodetic stations’ relative positions that form it. It is shown that a dynamic vector solution has the same properties as the individual ones which make it, if they use redundant sets of measured vectors of the same type
通过相关方法建立的区域大地测量全球导航卫星系统网络特性分析。完整案例
在本文中,我们继续研究永久大地测量网络中调整后的站坐标的统计特性。分析构造了测量向量冗余集坐标的方差-协方差矩阵,该矩阵考虑了具有公共站的向量之间的协方差。显示了此矩阵的主要属性。对具有这些属性的测量向量的冗余集进行了调整分析建模。得到了矢量网络调整坐标的方差-协方差矩阵,并分析了其性质。结果表明,在使用一种简化的方法来构建这种网络时,忽略了测量基线误差之间的相关性,其解的准确性被高估了,但协方差矩阵的结构没有改变。对网络的时间行为进行了分析建模,考虑了其可能的内部动力学,即形成网络的大地测量站相对位置的时间变化。结果表明,如果使用相同类型的冗余测量向量集,则动态向量解与形成网络的单个解具有相同的特性
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来源期刊
Geodeziya i Kartografiya
Geodeziya i Kartografiya Earth and Planetary Sciences-Earth-Surface Processes
CiteScore
0.60
自引率
0.00%
发文量
73
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