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Symmetrical triangular LFM for underwater acoustic communications

Symmetrical triangular LFM for underwater acoustic communications
Symmetrical triangular LFM for underwater acoustic communications
Synchronous detection acts as a key role in underwater acoustic communications. It is discovered that the Symmetrical Triangular Linear Frequency Modulation (STLFM) signal has double energy peaks in their fractional Fourier transform domain and these two peaks have symmetry in their amplitude if the STLFM signal is captured in the accurate time windows for the synchronization. In this paper, we propose a synchronization detection method based on the STLFM. To verify the effectiveness of the proposed method, we apply simulations based on the Bellhop program and sea trial data collected at Wuyuan Bay, Xiamen, China. The results show that the proposed STLFM method outperforms the LFM method.
1-5
Cai, Qiaosong
cc451571-5296-410c-be1f-eb9e03d300f7
Yuan, Fei
6378b428-b74b-41f7-8588-3e9e4b21cc07
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
Gao, Chunxian
2f4cad1b-5329-4e70-a879-075eeca5b968
Cai, Qiaosong
cc451571-5296-410c-be1f-eb9e03d300f7
Yuan, Fei
6378b428-b74b-41f7-8588-3e9e4b21cc07
Li, Jianghui
9c589194-00fa-4d42-abaf-53a32789cc5e
Gao, Chunxian
2f4cad1b-5329-4e70-a879-075eeca5b968

Cai, Qiaosong, Yuan, Fei, Li, Jianghui and Gao, Chunxian (2020) Symmetrical triangular LFM for underwater acoustic communications. OCEANS 2019 Seattle, Washington State Convention Center, Seattle, United States. 27 - 31 Oct 2019. pp. 1-5 .

Record type: Conference or Workshop Item (Paper)

Abstract

Synchronous detection acts as a key role in underwater acoustic communications. It is discovered that the Symmetrical Triangular Linear Frequency Modulation (STLFM) signal has double energy peaks in their fractional Fourier transform domain and these two peaks have symmetry in their amplitude if the STLFM signal is captured in the accurate time windows for the synchronization. In this paper, we propose a synchronization detection method based on the STLFM. To verify the effectiveness of the proposed method, we apply simulations based on the Bellhop program and sea trial data collected at Wuyuan Bay, Xiamen, China. The results show that the proposed STLFM method outperforms the LFM method.

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More information

Accepted/In Press date: 7 August 2019
Published date: 1 January 2020
Venue - Dates: OCEANS 2019 Seattle, Washington State Convention Center, Seattle, United States, 2019-10-27 - 2019-10-31

Identifiers

Local EPrints ID: 433228
URI: http://eprints.soton.ac.uk/id/eprint/433228
PURE UUID: 30db4726-e79c-4db6-af75-b959dc83bbe6
ORCID for Jianghui Li: ORCID iD orcid.org/0000-0002-2956-5940

Catalogue record

Date deposited: 12 Aug 2019 16:30
Last modified: 13 Dec 2021 03:23

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Contributors

Author: Qiaosong Cai
Author: Fei Yuan
Author: Jianghui Li ORCID iD
Author: Chunxian Gao

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