摘要
概率成像方法是利用测量的地面电场与电场扫描函数进行归一化的互相关运算,从而对地下电荷进行定位。为了提高这种方法的分辨率,从而提高对电荷的定位精度,根据正点电荷模型的电位剖面分布,提出了概率成像分辨宽度的概念,根据这个概念,提出了一种减小分辨宽度的方法-功率谱法,即由原先的场函数的归一化互相关运算改为场强平方后的归一化互相关运算。通过对算例的正反演研究,证明了确实是一种较好的改进方式。
The approach of probability tomography defined as the cross-correlation product of the total observed electric field components and the scanning function normalized by the square root of the product of respective variances, is used for the recognition of buried charges. In order to improve this approach resolution and give accurate orientation of charges, according to potential profile of positive point charge′s distributing, the conception of probability tomography′s resolvting width firstly is defined and thus a new algorithm called power-spectral method is brought forward. This algorithm is defined as the cross-correlation product of square electric field component but not elctric field component. Comparison of forward and inversion shows that the algorithm has better results.
出处
《物探化探计算技术》
CAS
CSCD
2005年第2期138-140,共3页
Computing Techniques For Geophysical and Geochemical Exploration
