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| 引用本文： | 谷川,秦世伟.????????????????????·???[J].大地测量与地球动力学,2010,30(5):97-101. |
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| 作者姓名： | 谷川 秦世伟 |
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| 作者单位： | 1. 上海市政工程设计研究总院,上海,200092
2. 上海大学土木工程系,上海,200072 |
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| 摘 要： | ???????????????????????????????????????μ????????????????????????е?????????????????????е???????????????????????????λ???????????????????????????м???????顣?÷????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
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| 关 键 词： | ?????? ?????? ?????? ?????? ?????? |
A NEW METHOD FOR FITTING DETECTION DATA OF CIRCULAR TUNNEL SECTION |
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| Gu Chuan,Qin Shiwei.A NEW METHOD FOR FITTING DETECTION DATA OF CIRCULAR TUNNEL SECTION[J].Journal of Geodesy and Geodynamics,2010,30(5):97-101. |
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| Authors: | Gu Chuan Qin Shiwei |
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| Institution: | 1)Shanghai Municipal Engineering Design &; Research General Institute, Shanghai 2000922)Department of Civil Engineering, Shanghai University, Shanghai 200072 |
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| Abstract: | Aiming at deficiencies of existing fitting algorithms for detection data of circular tunnel section, a new data fitting method is proposed. Firstly, all observed points are fitted to a plane. After that, all observed points are fitted by using a sphere model whose center must be in the fitted plane. Incorrect observed data will be excluded during the fitting process. The new method can avoid coordinates projection, coordinates transformation and iteration calculation, etc.The parameters such as center and radius of circle can be gotten directly. The calculation model is reliable and easy to realize, which is usefull to get high fitting precision. The new algorithm takes less calculation resource so it can be considered to be a good tunnel section fitting algorithms. |
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| Keywords: | section detection circular tunnel plane fitting sphere fitting error detection |
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