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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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基于离散余弦变换的地震随机噪声压制技术
Keywords: 离散余弦变换,预测滤波器,f-x域,随机噪声
Abstract:
？本文在离散余弦变换(dct)域中利用预测滤波器压制地震数据中随机噪声方法的基础上,进一步对该法的压噪能力进行了评估,表明与离散傅里叶变换相比,dct变换能够利用更少的系数来表征地震信号,即具有更好的能量压缩性能,从而可以更好地分离信号和随机噪声,实现随机噪声的压制。人工合成数据和实际数据的实验结果也表明,与f-x域预测滤波技术相比,采用dct压噪不仅效果好,而且能更好地保护有效波。
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