物探与化探2017，Vol.41Issue(6)：1060-1067,8.DOI:10.11720/wtyht.2017.6.10
基于希尔伯特-黄变换的低频探地雷达弱信号处理技术及其在天然气水合物勘探中的应用
Weak signal processing technology of low frequency GPR based on Hilbert-Huang transform and its application to permafrost area gas hydrate exploration
摘要
Abstract
As the low frequency ground penetrating radar acquisition time window is large,the influence of signal attenuation and dispersion on deep strata is very obvious,the real reflection signals are often accompanied by a lot of noise,and hence the low frequency GPR signal can be regarded as the typical non-stationary signal.The authors used the Hilbert-Huang transform method,which is very effective in non-steady signal processing,to study the weak signal processing method.This means can effectively filter the abrupt change part and noise in the signal,so as to detect and extract the deep weak signal.Using this method to explore the gas hydrate in permafrost zone,the authors successfully extracted the effective reflection signal of low frequency ground penetrating radar signals at the bottom of permafrost and its natural gas hydrate reservoir,thus obtaining good results.关键词
低频探地雷达/Hilbert-Huang变换/弱信号处理/冻土带天然气水合物勘探Key words
low frequency ground penetrating radar/Hilbert-Huang transform/weak signal processing/gas hydrate in permafrost area分类
天文与地球科学引用本文复制引用
白大为,杜炳锐,张鹏辉..基于希尔伯特-黄变换的低频探地雷达弱信号处理技术及其在天然气水合物勘探中的应用[J].物探与化探,2017,41(6):1060-1067,8.基金项目
国家高技术发展计划(“863”计划)课题(2012AA061403) （“863”计划）
国家127专项项目(GZHL20110324,GZH201400305) （GZHL20110324,GZH201400305）
中国地质调查局地质调查项目(DD20160224) （DD20160224）
中央公益性科研院所基本科研业务费专项基金项目(AS2015P02,AS2014J09) （AS2015P02,AS2014J09）
