重磁异常数据三维人机联作模拟

在研究三角形多面体模型重、磁异常三维正演和反演技术的基础上,吸取人机交互正演模拟的优点,实现了三角形多面体模型重、磁异常数据三维人机联作反演。通过研究三角形多面体模型节点偏导数的计算方法,对目标函数进行线性化处理,形成了计算机自动迭代修改模型体的技术。利用计算机图形技术,在三维空间显示重、磁场和模型体,开发了模型的交互修改技术,使数据解释过程中,可以结合已知信息及人的推断和经验,完成重、磁异常数据的三维模拟,减少了数据解释结果的不确定性。

Interactiv man/computer moding 3D body of gravity and magnetic anomaly data

On the basis of forward and inversion technique study for 3D Gravity and Magnetic body with polyhedron composed of triangular facets, assimilating the merit of interactive forward modeling, a new interactive man/computer inversion method for 3D Gravity and Magnetic bodies is presented in this paper. By researching the partial derivative calculation of model vertex and linearity treating field function using Taylor series, the 3D models can be changed via automatic optimization; the 3D models and field are displayed by computer visualization, and one can change models directly by interactive computation. Knowing information, man concluding and experience are integrated in whole process of data interpretation, the incertitude of data interpretation can be reduced.