马凯^1,,,
蔡昱明²,
王易川¹,
程玉胜¹
1.海军潜艇学院 青岛 266000
2.91001部队 北京 100036

详细信息

作者简介:马凯：男，1993年生，博士，研究方向为水声目标识别
蔡昱明：男，1982年生，工程师，研究方向为水声探测
王易川：男，1976年生，副教授，研究方向为水声目标识别
程玉胜：男，1963年生，教授，研究方向为水声目标识别

通讯作者:马凯　makainue@163.com

中图分类号:TN911.7

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被引次数:0

出版历程

收稿日期:2020-07-02
修回日期:2020-10-29
网络出版日期:2020-12-14
刊出日期:2021-03-22

An Algorithm of Two-level Adaptive Line-spectrum Enhancement Based on Noise Suppression Gate

Kai MA^1,,,
Yuming CAI²,
Yichuan WANG¹,
Yusheng CHENG¹
1. Naval Submarine Academy, Qingdao 266000, China
2. Unit 91001, Beijing 100036, China


摘要
摘要:针对低信噪比下，自适应线谱增强(ALE)算法在低信噪比时性能急剧下降的问题，该文提出2级ALE算法，该算法在普通的ALE算法的基础上，将输出信号和误差信号的傅里叶变换作为第2级ALE的输入，对线谱作进一步增强。并利用噪声抑制门对信号进行降噪预处理，然后结合提出的2级ALE算法，提出一种基于噪声抑制门的2级ALE算法，进一步提高信噪比，增强线谱。仿真和海试数据表明，算法性能较普通ALE算法有较大提升。
关键词:线谱增强/
噪声抑制门/
2级ALE算法
Abstract:In view of the problem that the performance of the Adaptive Line-spectrum Enhancement (ALE) algorithm drops sharply under low signal-to-noise ratio, a two-level ALE algorithm is proposed. Based on the ordinary ALE algorithm, the Fourier transform of the output signal and the error signal is used as the input of the second-level ALE to enhance further the line-spectrum. The noise suppression gate is used to perform noise suppression preprocessing on the signal, and then combining with the proposed two-level ALE algorithm, an algorithm of two-level ALE based on noise suppression gate is proposed to improve further the signal-to-noise ratio and enhance the line-spectrum. Simulation and sea trial data show that the performance of the algorithm is greatly improved compared with the ordinary ALE algorithm.
Key words:Line-spectrum enhancement/
Noise suppression gate/
Two-stage Adaptive Line-spectrum Enhancement (ALE) algorithm



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