基于双谱信号重构的物探数据插值方法  

Geophysical data interpolation by signal reconstruction based on bispectrum.

作　　者：俞建宝[1] 陈高[2] 李正文[3] 张杨[1] 

机构地区：[1]中国石油化工股份有限公司石油勘探开发研究院南京石油物探研究所,江苏南京210014 [2]中国石油化工股份有限公司勘探南方分公司,四川成都610041 [3]成都理工大学,四川成都610059

出　　处：《勘探地球物理进展》2009年第5期326-329,307,共4页Progress in Exploration Geophysics

基　　金：国家高技术研究发展计划(863)项目(2008AA06Z202);国家科技重大专项(2008ZX07005)资助

摘　　要：实信号可以用谐波信号来描述,谐波信号的系数、相位角由实信号的双谱振幅谱、相位谱推算得到,由此实现对实信号的重构,即双谱信号重构。在信号重构过程中,通过缩小信号的采样间隔可以实现数据的内插。数值模拟和实际应用结果表明,对于重力异常等具有确定性分布的信号,用基于双谱信号重构的数据插值方法内插出来的数据具有高保真性。A real signal can be represented by a harmonic signal.The coefficient and phase angle of the harmonic signal is estimated from the amplitude spectrum and phase spectrum of the real signal’s bispectrum.The reconstruction of a real signal accomplished in this way is called bispectrum reconstruction.Data interpolation is achieved by reducing the sample interval of the signal during the reconstruction of the signal.Tests on model and real data showed the reconstructed data are of high fidelity if the original data have a deterministic distribution like gravimetric survey data.

关 键 词：双谱分析 信号重构 数据插值 高精度重力 高保真 

分 类 号：P631.4[天文地球—地质矿产勘探]