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Journal of Marine Science and Engineering, 2023 The sound speed profile (SSP) is a necessary prerequisite for acoustic field computation and underwater target localization and monitoring. Due to the dynamic nature of the ocean, the reconstruction of SSPs with surface characteristics is a big challenge.
Wen Chen +6 more
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Compressive Sound Speed Profile Inversion Using Beamforming Results
Remote Sensing, 2018 Sound speed profile (SSP) significantly affects acoustic propagation in the ocean. In this work, the SSP is inverted using compressive sensing (CS) combined with beamforming to indicate the direction of arrivals (DOAs). The travel times and the positions
Youngmin Choo, Woojae Seong
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Applied Ocean ResearchAs one of the significant factors in determining the propagation mode of the underwater acoustic signal, the accurate acquisition of the sound speed profile (SSP) is crucial for constructing underwater acoustic systems.
Yuyao Liu, Yu Chen, Wei Chen, Zhou Meng
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Underwater Sound Speed Profile Inversion Based on Res-SACNN from Different Spatiotemporal Dimensions
Remote SensingThe sound speed profile (SSP) is an important feature in the field of ocean acoustics. The accurate estimation of SSP is significant for the development of underwater position, communication, and associated fundamental marine research.
Jiru Wang +4 more
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A meta-deep-learning framework for spatio-temporal underwater SSP inversion
Frontiers in Marine Science, 2023 Sound speed distribution, represented by a sound speed profile (SSP), is of great significance because the nonuniform distribution of sound speed will cause signal propagation path bending with Snell effect, which brings difficulties in precise ...
Wei Huang +4 more
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Frontiers in Marine Science, 2022 IntroductionIn underwater acoustic applications, the three-dimensional sound speed distribution has a significant impact on signal propagation. However, the traditional sound speed profile (SSP) measurement method requires a lot of manpower and time, and
Zhenyi Ou +4 more
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Satellite Navigation, 2023 In-field Sound Speed Profile (SSP) measurement is still indispensable for achieving centimeter-level-precision Global Navigation Satellite System (GNSS)-Acoustic (GNSS-A) positioning in current state of the art.
Shuqiang Xue +4 more
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Joint trans-dimensional inversion for water-column sound speed and seabed geoacoustic models [PDF]
JASA Express Letters, 2023 This letter considers joint estimation of the water-column sound-speed profile (SSP) and seabed geoacoustic model through Bayesian inversion of ocean-acoustic data.
Stan E. Dosso, Julien Bonnel
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Frontiers in Marine Science, 2023 IntroductionThe trend of sound speed profile (SSP) inversion is towards wide-area sound speed estimation. However, the traditional inversion method of dividing the latitude and longitude grids has limitations in terms of significantly lower accuracy when
Chen Liu, Ke Qu
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SSP based underwater CIR estimation with S-BiFPN
ICT Express, 2022 In underwater sensor networks (USN), channel impulse response (CIR) estimation based on sound speed profile (SSP) ensures link reliability. We propose a separate bi-directional feature pyramid network (S-BiFPN) that estimates the CIR using deep learning ...
Seunghwan Seol +4 more
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