| 推广的半动态法及其在多级工程控制网精度评定中的应用 |
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| 引用本文： | 施一民.推广的半动态法及其在多级工程控制网精度评定中的应用[J].测绘学院学报,1993(1). |
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| 作者姓名： | 施一民 |
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| 作者单位： | 同济大学 |
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| 摘 要： | 为了合理地求定按附合网平差的网点坐标的实际精度,本文推广了半动态法,籍此可在首级网的基准下,统一求定顾及各级控制网测量误差影响精度的全部网点坐标的方差—协方差阵。本文所提出的方法适用于种种情况下的精度估计:等级数不受限制的平面、高程或三维网,本级网平差中的固定数据以及待估计的平差值函数可以包含不同级的网点,从而克服了半动态法原有的局限性。
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| 关 键 词： | 半动态法 多级工程控制网 起始数据误差 |
Extended Semidynamic Approach and Its Application of Accuracy Estimate in Multi-order Engineering Control Networks |
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| Shi Yimin.Extended Semidynamic Approach and Its Application of Accuracy Estimate in Multi-order Engineering Control Networks[J].Journal of Institute of Surveying and Mapping,1993(1). |
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| Authors: | Shi Yimin |
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| Abstract: | In order to estimate the objective accuracy for adjustment result by means of the fixed-control adjustment ("over- constrained" method), a extended semidynamic approach is presented in this paper. Based on this method, it is possible in multi-order engeneering control networks to obtain the full covariance matrix with respect to the datum for the highest order network. This covariance matrix for the existing and new stations have taken into account the influence of initial data errors of higher order control networks. It is suitable for accuracy estimate under all sorts of conditions. |
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