大庆石油地质与开发2018，Vol.37Issue(1)：147-153,7.DOI:10.19597/J.ISSN.1000-3754.201612084
改进的重力位场向下延拓计算方法
CALCULATING METHOD OF THE DOWNWARD CONTINUATION FOR THE IMPROVED GRAVITY POTENTIAL FIELD
摘要
Abstract
For a long time,because of the ill-applicability nature of the potential-field downward calculation itself,the stable corresponding calculating method has been sought.With the help of the regularized field continuation operator proposed by the predecessors,the regularized target equation was adopted to obtain the regularized parameters,and meanwhile the golden-section search method was used to speed up the operation efficiency.In addition,the function of the low-pass filter of the operator was improved to be the band-pass filter,and the corresponding regularized target equation was established to filter the high-band interference and select the information of low frequency band to a certain deal at the same time.For different depths of the downward depth,with the help of this method,different regularized filtering parameters and frequency ranges were obtained and moreover the stable and high-efficiency gravity field downward calculation was realized.The applicability of the method was validated by the model trail test and actually measured data.关键词
向下延拓/正则化/目标方程/带通滤波Key words
downward continuation/regularization/target equation/band pass filter分类
天文与地球科学引用本文复制引用
王纯,张研,文百红..改进的重力位场向下延拓计算方法[J].大庆石油地质与开发,2018,37(1):147-153,7.基金项目
国家科技重大专项(2016ZX05006-005). （2016ZX05006-005）
