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为了提高算法在各种信号环境下的鲁棒性,该文对主模式抑制算法的权值计算结构进行了详细分析,指出抑制系数对信号能量的保留作用有重要的影响。提出了一种对抑制系数的改进机制,利用改进后的算法计算的权值对信号能量的保留作用增强,提高了算法在高信噪比情况下的增益。实验结果表明:与传统算法相比,改进后的算法在保持了低信噪比稳健性的同时,其在强信号环境下的算法增益提高了若干dB,并且该算法在不同信号环境中,提高了信号失配的鲁棒性。
In order to improve the robustness of the algorithm in various signal environments, the weight calculation of the main mode suppression algorithm is analyzed in detail. It is pointed out that the suppression coefficient has an important influence on the reservation of signal energy. An improved mechanism of the suppression coefficient is proposed. The weight of the improved algorithm retains the signal energy and enhances the gain of the algorithm under high signal-to-noise ratio. The experimental results show that compared with the traditional algorithm, the improved algorithm preserves the robustness of low signal-to-noise ratio and increases the gain of the algorithm in strong signal environment by a few dB, and the algorithm improves in different signal environments The robustness of signal mismatch.