【摘要】 随着高密度采集需求日趋增加,出现了高效、高保真、环保的可控震源勘探技术。滑动扫描采集虽然缩短了相邻两炮的滑动时间,采集效率得到很大提高,但也使后一炮中的谐波畸变对前一炮的基波产生影响,降低了地震资料的质量。通过分析可控震源谐波的产生机理,提出一种基于能量差异分频谐波压制方法。地震资料处理和叠加成像结果表明,该方法在有效压制谐波噪声的同时,能够较好地保护有效信号,提高资料信噪比。更多还原

【Abstract】 With the increasing of demand for high-density acquisition, the vibroseis prospecting technologies of high-efficiency, high-fideli-ty and environmental protection have come into use, of which, the sliding scan acquisition can shorten the slip time between two neighbor-ing shots and improve the efficiency of acquisition, but its harmonic distortion can reduce the quality of seismic data for the impact of thelatter shot on the former one. This paper presents the mechanism of vibroseis harmonic noise and proposed a method for frequency-divisionharmonic noise suppression based on energy difference. The seismic data processing and superposition imaging results show that this meth-od can obviously suppress the harmonic noise, protect effective signals and improve the signal/noise ratio.更多还原