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可控震源地震数据谐波滤除方法

Keywords: 可控震源,谐波畸变,地震数据采集,滑动扫描,滤除高次谐波

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Abstract:

?本文分析了可控震源滑动扫描中各种谐波产生的原因,指出高次谐波是其中最严重的谐波干扰类型;通过原理分析及数值试验探讨了滑动扫描方法,并基于高次谐波与原始激发信号在各频段的能量呈线性关系这个假设建立了谐波滤除的数学模型;利用参考信号倍增法生成各次谐波,并用各次谐波相关对比法估算各次谐波的能量比。将本文滤除谐波算法应用于实际数据处理,所得结果表明该方法不仅滤除谐波效果好,而且运算速度快。

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