双谱地震子波估计

子波处理是提高地震资料分析的一个重要手段，该技术的关键是地震子波的估计。根据高阶累积量中保留有信号相位信息的性质，给出了一种基于地震信号双谱的子波估计突破了以往对地震子波是最小相位的假设，适应于任意相位的子波，针对不同性质的地震子波，进行了理论计算，结果表明，这一该是可行的。同时也显示了信号高阶谱技术在地震资料子波处理，提高分辨率方面的潜力。

WAVELET ESTIMATION BASED ON BISPECTRUM

Wavelet Processing is an important technique used to improve the resolution of seismic data, in which the key is wavelet estimation. According to the fact that higher order cumulate retains phase information, a method of wavelet estimation based on bispectrum of seismic signals is provided in this paper. The method does not need the traditional assumption that the wavelet must be minimum-phase, and is valid for wavelet of any phase. Applicability of the method is proved by theoretical calculations on seismic wavelet with different phase properties, showing the potential of higher-order signal spectra in wavelet processing and resolution improvement.