A novel adaptive line enhancer(ALE) with high frequency resolution was presented,which suitable for underwater acoustic communication with MFSK or frequency hopping(FH) modulation.

• 根据水声MFSK或跳频通信中频率估计特点,提出了一种基于自适应线谱增强器(ALE)理论的实用高分辨频率估计新方法。