摘要
电磁法物探的勘测信号,在不同频率段,存在不同的信号脉冲现象。通过小波时频分析功能,可以对脉冲现象进行分析。研究表明,脉冲现象严重影响基于傅立叶变换方法的解译效果,脉冲现象严重时,傅立叶方法已不适用。
With respect to signals of geophysical exploration of electrical-magnetic method,there is different impulse phenomenon in different frequency.The time-frequency analysis function of wavelet can analyses impulse phenomenon.The research shows that the impulse phenomenon affects seriously the Fourier tranform-based interpretation.When serious impulse phenomenon exists in signals,The Fourier transform Method can＇t be used.
出处
《地质找矿论丛》
CAS
CSCD
2007年第3期224-227,共4页
Contributions to Geology and Mineral Resources Research
基金
中国地质调查局"严重缺水地区地下水勘查"项目(1212010535414)资助
关键词
脉冲性
电磁法
频谱分析
impulse properties
electrical-magnetic method
frequency spectral analysis
