摘要
基于m序列的基本特性和相关函数及其频谱的特征,提出了一种将m序列应用于电阻率法勘探的方法,初步探讨了在不考虑复电阻率情况下利用m序列互相关函数的频谱辨识电阻率的原理。在现有电法仪基础上改造得到的实验样机,通过电阻测试和野外测试与直流电阻率法对比,对辨识原理进行了实验验证。实验结果表明,基于m序列的电阻率法对电阻率有很好辨识能力,能有效地抑制噪声和自然电位的影响,具有一定的实际应用价值。
On the basis of the characteristics of m sequence and the feature of correlation function and its spectrum, a new resistivity electrical prospecting method of using m sequence is presented in the paper in which the correlation principle of the resistivity basedon the spectrum of the correlation function of the m sequence is discussed without taking into account complex resistivity case. Experimental prototype that is produced on the existing electrical instrument is used to test the correlation principle of the relative resistivity by comparing with DC resistivity method in resistance testing and field testing. The results show that the new resistivity method of using m sequence to respond the diversification of the resistivity and suppress noise has the practical value.
出处
《工程地球物理学报》
2010年第2期159-163,共5页
Chinese Journal of Engineering Geophysics
基金
国家高技术研究发展计划(863计划)项目(编号:2007AA06Z130-3)资助
关键词
序列
电阻率
相关检测
m sequence
resistivity
correlation detection
