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中文摘要：
为了更好地抑制信号背景中的非高斯噪声,本文提出了基于分数低阶的双谱定义,并给出在分数低阶有色噪声背景下双谱的直接和间接估计方法。仿真结果表明,基于分数低阶的双谱估计能够有效地抑制非高斯噪声,具有良好的韧性。
英文摘要：
In order to suppress the non - Gaussian noise, the bispeetrum of fractional lower order was defined, and two estimation methods based on fractional lower order were proposed. Simulation results showed that the new algorithms are much robust and effective for suppressing the fractional lower order noise.
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