共查询到17条相似文献，搜索用时 562 毫秒
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赵少荣 《武汉大学学报(信息科学版)》1991,(2)
本文首先借助于 Gauss-Markov 模型下两个多维备选假设检验的理论,将变形监测网单个备选假设下的灵敏度,在顾及模型误差的情况下,扩展成监测网的可区分性理论,提出了监测网的可区分性和区分可靠性概念;其次,对于监测网在三种典型变形模型(单点移动,错动和均匀应变)下变形与粗差的可区分性进行了讨论,获得了一些有益的结论。 相似文献
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从形变监测数据处理中常用的动态平差模型出发，推导出了研究形变与粗差可区分性的公式，给出在形变模型统计检验的同时统计检验粗差的方法与步骤，对垂直形变监测网的可区分性作了详细讨论和实例分析，得出几点结论． 相似文献
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本文用高斯-马尔科夫模型下模型误差的可发现性和可区分性理论研究变形模型。将单个变形模型下的可发现性理论扩展到了多个变形模型下的可区分性理论，导出了一般公式，并就几种典型变形模型的可发现性和可区分性进行了讨论，得出了一些有益的结论。本文的研究表明，变形模型的可发现性和可区分性是监测网质量控制更可靠，更直接的指标。 相似文献
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根据单个备选假设的统计检验,详细导出了模型误差的可区分度公式,并论述了可区分度与可发现度及与Forstner法的关系。作为应用,可导出变形模型的可区分度及网的可区分标准,在监测网的设计中应用。 相似文献
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本文根据变形监测网的特点，讨论了监测网的可靠性问题，与常现大地网不同，得到的外可靠性是变形参数的影响度量，最后，以实例加以讨论分析．结果表明，本文导出的公式适于在监测网的设计和评价中应用。 相似文献
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根据大坝变形监测网的特点，综合考虑灵敏度、可靠性因子和费用三个指标，提出了一种模拟优化设计方法，并通过白河水电工程枢纽变形监测网的实例计算，说明了该方法的有效性和可行性． 相似文献
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本文主要就分级布设的变形监测网的灵敏度问题进行讨论，并就在实际工作中如何直接、有效地改善监测网的灵敏度提出了有益的建议． 相似文献
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在监测网设计阶段，不仅要考虑不同变形模型之间的可区分度，而且要研究变形与粗差的可区分度，即双可区分度，以利以后进行变形分析。文中导出了变形与粗差的可区分度，并以双可区分度为准则进行监测网非线性动态优化设计。同时给出了一个非线性直接优化算法，该算法避开了常规的台劳级数线性展开的方法，易于在计算机上实现。 相似文献
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CHEN Yongqi TANG HongwaiCHEN Yongqi Professor School of Geo-science Surveying Engineering WTUSM Wuhan China 《地球空间信息科学学报》1998,(1)
A monitoring scheme must be so designed that several possible mod-els can be efficiently separated in the stage of analysis of deformation measure-ments.Based on the concept of separability developed by Chen and Chrzanowski,a methodology for the design of monitoring schemes has been developed by the au-thors.In the method a computer simulation technique is employed,into whichsome rules have been elaborated allowing minimal human intervention.In this pa-per the criterion is first presented and the design technique using the step one up-dating procedure is discussed.Finally,design of a simulated monitoring networkis made as a demonstrating example. 相似文献
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Monitoring of the crustal movements along a tectonic fault is of particular importance in the study of the mechanism of an
earthquake. There are several techniques to gauge crustal deformations, including terrestrial survey methods, space-positioning
techniques and permanently installed geotechnical instruments. Each technique or method has its own advantages and limitations.
Integration of the various techniques into a monitoring scheme is recommended. It is discussed how a proper integrated system
can significantly improve the separability of a monitoring scheme at little additional expense. Separability is the ability
of a monitoring scheme to distinguish among potential deformation models, and can be used for the optimum design of monitoring
schemes. Discussion concentrates on the separability between a dislocation model and a rigid movement model in the area of
an active fault. The addition of a few strain observations to a conventional terrestrial survey scheme can better distinguish
between the above-mentioned models. A simulated example is presented to demonstrate the idea.
Received: 4 November 1997 / Accepted: 9 July 2001 相似文献
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Zhao Shaorong 《Journal of Geodesy》1990,64(4):301-396
According to the testing theory with two alternative hypotheses, the theory of detectability for a deformation monitoring
network has been extended to the theory of separability for deformations and gross errors. With this theory it can be evaluated
whether deformations and gross errors can be statistically distinguished each other, which is very important for deformation
analysis. General formulas are established and the separability between deformations and gross errors for some typical deformation
models is investigated. An example of separating gross errors from deformations is given. 相似文献
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本文采用变形模型可区分度量的概念进行监测网的优化设计。在算法上采用计算机模拟逐一更新的计算过程。为了克服常规模拟法需要人工干预的缺点,引进了一些规则,利用计算机的判断和推理过程,达到了自动设计的目的。作为示范例子,文中最后还给出了一个模拟监测网的设计结果。 相似文献
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G. Even-Tzur 《Journal of Geodesy》2002,76(8):455-461
The performance of geodetic monitoring networks is heavily influenced by the configuration of the measured GPS vectors. As
an effective design of the GPS measurements will decrease GPS campaign costs and increase the accuracy and reliability of
the entire network, the identification of the preferred GPS vectors for measurement has been highlighted as a core problem
in the process of deformation monitoring. An algorithm based on a sensitivity analysis of the network, as dependent upon a
postulated velocity field, is suggested for the selection of the optimal GPS vectors. Relevant mathematical and statistical
concepts are presented as the basis for an improved method of vector configuration design. A sensitivity analysis of the geodetic
geodynamic network in the north of Israel is presented, where the method is examined against two deformation models, the Simple
Transform Fault and the Locked Fault. The proposed method is suggested as a means for the improvement of the design of monitoring
networks, a common practice worldwide.
Received: 30 July 2001 / Accepted: 3 June 2002
Acknowledgments. It is my pleasant duty to thank the Survey of Israel and Dr. E. Ostrovsky for providing the variance–covariance matrix of
the G1 network in northern Israel. I would like to thank the reviewers of this paper for their constructive and helpful remarks. 相似文献
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变形体的变形模式确定的情况下,应用灵敏度准则进行监测网的设计;根据Ｔａｙｏｒ展式,导出了监测网顾及灵敏度准则的二类设计模型,并对其解算及模拟算例加以说明。 相似文献