摘要
在变形监测中,特别在地震形变监测中往往布设自由网。对没有固定基准的自由网,位移矢量是真实位移的有偏估值,有时精度最高的地方发现变形能力并非最强。因此,在变形监测网设计时应以反映发现变形能力的灵敏度作为主要质量指标。而变形监测网在空间和时间上都是变化的。为此,本文提出了同时顾及灵敏度、变形参数精度、观测费用和可靠性等多种质量准则并顾及地壳运动的动态优化设计模型。
In deformation monitoring, especially in seismic deformation monitoring, the network is usually free. The displacement vector is biased estimated values, and sometimes, the area where the measuring accuracy is the highest could not have the best ability to detect the deformation. In the optimal design of a deformation monitoring, therefore, the sensitivity, which reflects the ability to detect deformation, has to be taken as a criterion. A deformation monitoring network changes with time and space. This paper presents dynamic optimal design models, with simultaneous consideration of the sensitivity, the accuracy of deformation parameters, the observed costs the reliability and the crustal movement.
出处
《地壳形变与地震》
CSCD
1991年第2期40-47,共8页
Crustal Deformation and Earthquake
基金
国家自然科学基金
