地质通报2018，Vol.37Issue(1)：153-164,12.
位场数据小子域滤波法处理效果对比与优选
The processing effect comparison and optimization of small subdo-main filtering method in potential field data
摘要
Abstract
The study of the edge location of the geological body is the most important task in the processing and interpretation of gravity and magnetic potential field data.The results of relevant map can show the geological body's edge location directly by means of filtering processing with the gravity and magnetic potential field data.Small subdomain filtering is one of the filtering methods,and it has been used by many researchers to recognize the edge location of the geological body.There are 10 kinds of small subdomain filtering methods at present;however,rare studies have analyzed the filtering effect about those methods systematically,and this brings much inconvenience to users.Therefore,the authors designed 2 theoretical models to compare their filtering results and then selected the optimal filtering parameters.The results of theoretical model and field data show that the moving shape small subdomain filtering method has the best effect on enhancing the edge location of the geological body,and the filtering window chooses 5×5 points and 1 iteration. The symmetrical shape small subdomain filtering method can preserve the main gradient direction when filtering the ran-dom noise,and the filtering window chooses 5×5 points and 2 iterations.关键词
位场数据/小子域滤波/效果对比/滤波参数Key words
potential field data/small subdomain filtering/effect comparison/filtering parameter分类
天文与地球科学引用本文复制引用
许海红,李玉宏,袁炳强,姜亭,魏建设,张春灌..位场数据小子域滤波法处理效果对比与优选[J].地质通报,2018,37(1):153-164,12.基金项目
中国地质调查局项目《银额盆地及周缘油气基础地质调查》(编号:DD20160172)和《银额盆地上古生界油气战略选区调查》(编号:DD20160200) （编号:DD20160172）
