Underwater weak moving target detection method based on wideband Multi-pulse coherent integration

Sun, Dajun; Hou, Kaiyang; Teng, Tingting

doi:10.1016/j.apacoust.2023.109616

Applied Acoustics

2023

DOI: 10.1016/j.apacoust.2023.109616

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Underwater weak moving target detection method based on wideband Multi-pulse coherent integration

Dajun Sun,

Kaiyang Hou,

Tingting Teng

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2024

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Cited by 2 publications

References 19 publications

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Research on Multitarget Vital Sign Detection Using IR-UWB Radar in Occlusion Scenarios

Huo,

Zhang,

Yin

et al. 2024

IEEE Sensors J.

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Research on Multitarget Vital Sign Detection Using IR-UWB Radar in Occlusion Scenarios

Huo,

Zhang,

Yin

et al. 2024

IEEE Sensors J.

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A coherent integration method of an active sonar for maneuvering turning target detection

Hou,

Sun,

Teng

et al. 2024

The Journal of the Acoustical Society of America

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The detection probability of underwater weak targets using active sonar is low, and inter-pulse coherent integration can improve the signal-to-noise ratio of echoes. When a target executes a maneuvering turn, complex range and Doppler frequency migrations occur during the coherent integration time that decrease the coherent integration gain. Most existing integration methods simplify the target motion to a finite-order polynomial model but fail to integrate a maneuvering turning target (MTT) due to model mismatch. Hence, this study proposes an underwater MTT integration method based on the modified Radon-Fourier transform. The proposed method constructs a theoretically accurate motion model for the MTT and a phase compensation function to compensate for the Doppler frequency migration. Furthermore, it yields a well-focused integration peak in the range-velocity and offset angle-turn rate dimensions and accurately estimates the target motion parameters. Moreover, the proposed method is suitable for targets with radial and oblique uniform motions. The effectiveness of the proposed method is demonstrated through simulations and a lake test. The proposed method demonstrates good integration performance, with an integration gain approximately 4–7 dB higher than that of traditional methods when using 30 integration pulses.

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Underwater weak moving target detection method based on wideband Multi-pulse coherent integration

Cited by 2 publications

References 19 publications

Research on Multitarget Vital Sign Detection Using IR-UWB Radar in Occlusion Scenarios

Research on Multitarget Vital Sign Detection Using IR-UWB Radar in Occlusion Scenarios

A coherent integration method of an active sonar for maneuvering turning target detection

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