信噪比约束的可调节振幅补偿算子反Q滤波方法

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中图分类号：P631.4 文献标志码：A

seismic data is low，the conventional stable inverse Q filtering method has the challenge of enhancing the noise energy. In this paper，an inverse Q filtering method with adjustable amplitude compensation operator under SNR constraints is proposed based on self-adaptive gain-limited inverse Q filtering method. This method presents a new amplitude compensation operator. By calculating the SNR of seismic data，the cutoff frequency of the effective frequency band is obtained，enabling the amplitude compensation operator to be dynamically adjusted according to the characteristics of the seismic data itself.The high-frequency noise energy is further suppressed by introducing a dynamically adjustable amplitude compensation curve.The test results of theoretical synthetic data and field data show that： the method proposed in this paper can compensate the amplitude well and improve the seismic data resolution. Compared with the traditional stable inverse Q filtering method and the self-adaptive gainlimited inverse Q filtering method， the method proposed in this paper has a better ability to suppress noise energy enhancement，and the SNR of the processing result is higher.

Key words： inverse Q filtering； time-varying gain-limited； high resolution；high signal-to-noisiratio;seismic attenuation;attenuation compensation

0 引言

高分辨率地震资料在构造解释和储层预测中发挥着重要作用[1-5]。（剩余11515字）