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

Kai MA; Yuming CAI; Yichuan WANG; Yusheng CHENG

doi:10.11999/JEIT200540

Volume 43 Issue 3

Mar. 2021

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Article Navigation > Journal of Electronics & Information Technology > 2021 > 43(3): 773-780

Kai MA, Yuming CAI, Yichuan WANG, Yusheng CHENG. An Algorithm of Two-level Adaptive Line-spectrum Enhancement Based on Noise Suppression Gate[J]. Journal of Electronics & Information Technology, 2021, 43(3): 773-780. doi: 10.11999/JEIT200540

Citation:

Kai MA, Yuming CAI, Yichuan WANG, Yusheng CHENG. An Algorithm of Two-level Adaptive Line-spectrum Enhancement Based on Noise Suppression Gate[J]. Journal of Electronics & Information Technology, 2021, 43(3): 773-780. doi: 10.11999/JEIT200540

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

doi: 10.11999/JEIT200540

1.
Naval Submarine Academy, Qingdao 266000, China
2.
Unit 91001, Beijing 100036, China

Received Date: 2020-07-02
Rev Recd Date: 2020-10-29

Available Online: 2020-12-14

Publish Date: 2021-03-22

Abstract

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.
- Line-spectrum enhancement,
- Noise suppression gate,
- Two-stage Adaptive Line-spectrum Enhancement (ALE) algorithm

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References(23)

References

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