Passive Localization Of Underwater Broadband High-Frequency Targets Based on frequency Difference Matching Field

LI Jiayi; ZHOU Jianbo; LI Shaomeng; SHI Min; WANG Yafen

doi:10.11993/j.issn.2096-3920.2024-0136

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LI Jiayi, ZHOU Jianbo, LI Shaomeng, SHI Min, WANG Yafen. Passive Localization Of Underwater Broadband High-Frequency Targets Based on frequency Difference Matching Field[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2024-0136

Citation:

LI Jiayi, ZHOU Jianbo, LI Shaomeng, SHI Min, WANG Yafen. Passive Localization Of Underwater Broadband High-Frequency Targets Based on frequency Difference Matching Field[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2024-0136

Citation:

LI Jiayi, ZHOU Jianbo, LI Shaomeng, SHI Min, WANG Yafen. Passive Localization Of Underwater Broadband High-Frequency Targets Based on frequency Difference Matching Field[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2024-0136

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Passive Localization Of Underwater Broadband High-Frequency Targets Based on frequency Difference Matching Field

doi: 10.11993/j.issn.2096-3920.2024-0136

1.
Unit 91977th, the People’s Liberation Army of China, Beijing 100036, China
2.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China

Received Date: 2024-09-11
Accepted Date: 2024-11-12
Rev Recd Date: 2024-11-04

Available Online: 2025-01-20

Abstract

Abstract

High frequency signals are easily affected by environmental uncertainty during propagation, leading to degradation of traditional matching field methods in high-frequency localization performance. To improve this problem, this article proposes a passive high-frequency signal localization method based on frequency difference matching field, which performs quadratic product processing on the received data of arrays with different frequencies within the high-frequency bandwidth to construct a sound field structure at the difference frequency much smaller than the original frequency. Apply the established matching field positioning algorithm at the difference frequency to reduce the broadband high-frequency signal to the low-frequency range for processing. Firstly, the principle of frequency difference method is presented and the grazing angle of shallow sea multipath propagation is accurately estimated. Based on this, physical models of frequency difference matching fields suitable for shallow sea and deep sea are proposed. Finally, simulation results show that the proposed method has significantly better localization performance for high-frequency signals in uncertain environments than traditional methods.
- underwater target localization,
- frequency difference method,
- matching field localization

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References(15)

References

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