Multicarrier Spread Spectrum Communication Scheme for Cruising Sensor Network in Confined Underwater Space by Yuan Wang, Zhoumo Zeng, Yibo Li, Jinsheng Zhang, Shijiu Jin

“…This paper presents a multicarrier spread spectrum scheme, which is designed for communications between the nodes and the control station. Although underwater acoustic communication has been widely researched due to the growing demands from ocean development and marine research, communication in confined underwater space is an unexplored domain as most research focuses on communication in spacious water areas. …”
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Research on Improvement of Spectrum Efficiency of Spread Spectrum OFDM Communication Scheme for Cruising Sensor Network by Yuan Wang, Zhoumo Zeng, Yibo Li, Wen Zhang, Hao Feng, Shijiu Jin

“…A reliable and high-speed underwater acoustic (UWA) communication scheme is necessary for node-to-node communication. …”
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A Novel Efficient Passive Spatial Orientation Detection Method of UMT Enabled by ISB by Zhengqiang Xiong, Tao Sun, Zhengxing Wang, Yuhao Wu, Jie Yin

“…Simulation experiments demonstrate the efficiency of the ECOD method in passive 3D spatial orientation of underwater acoustic target and show that the ECOD method has a better performance in time consumption compared with general DOA algorithms.…”
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Evaluation of Selected Modulation Techniques in Underwater Multipath Channel by Agnieszka Czapiewska, Andrzej Luksza, Ryszard Studanski, Lukasz Wojewodka, Andrzej Zak

“…However, the channel for Underwater Acoustic (UWA) communications is challenging compared to the radio wave propagation in the air. …”
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Hydroacoustic sensing of seismic events during the Tajogaite volcanic eruption (La Palma, Spain) by Jesús Alcázar-Treviño, Guillermo Lara, Eduardo D. Suarez, Manuel Bou, Itahiza Domínguez, Susannah Buchan, Francisco Domínguez, Eugenio Fraile-Nuez

“…During the 2021 subaerial eruption of the Tajogaite volcano on La Palma Island (Canary Islands, NW Africa), an underwater acoustic sensor was strategically deployed to monitor seismic activity. …”
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A software-defined multi-modal wireless sensor network for ocean monitoring by Hanjiang Luo, Xu Wang, Ziyang Xu, Chao Liu, Jeng-Shyang Pan

“…However, several challenges arise when implementing the concept of software-defined networking in maritime wireless sensor networks, as the networks operate in harsh ocean environments, and the dominant underwater acoustic systems are with limited bandwidth and high latency, which render the implementation of software-defined networking central-control difficult. …”
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Probabilistic Noise Detection and Weighted Non-Negative Matrix Factorization-Based Noise Reduction Methods for Snapping Shrimp Noise by Suhyeon Park, Jongwon Seok, Jungpyo Hong

“…Snapping Shrimps Noise (SSN), loud sounds generated by these underwater creatures, serves as a major source of in performance degradation by decreasing the Signal-to-Noise Ratio (SNR) for underwater acoustic communication and target detection. …”
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Fast and Deterministic Underwater Point Cloud Registration for Multibeam Echo Sounder Data by Liang Zhao, Lan Cheng, Tingfeng Tan, Chun Cao, Feihu Zhang

“…Given the prevalence of outliers and noise in underwater acoustic measurements, the BnB method is employed to provide globally deterministic solutions. …”
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Classification and Monitoring of Salt Marsh Vegetation in the Yellow River Delta Based on Multi-Source Remote Sensing Data Fusion by Ran Xu, Yanguo Fan, Bowen Fan, Guangyue Feng, Ruotong Li

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Preprocessing LOFARgram through U-Net++ neural network by Dan Peng, Xichen Xu, Wenhua Song, Dazhi Gao

“…This model uses explosive decaying cosine pulses as basic units to simulate ship noise sources and employs the KRAKEN normal mode model to simulate the underwater acoustic channel’s transfer function, thereby efficiently creating high-fidelity ship noise LOFARgrams. …”
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Analysis of Nuclear Explosion Detection Capability of IMS Hydroacoustic Network by Yan Wang, Wei Tang, Zhehan Liu, Jian Li, Xiaoming Wang, Shiya Zou

“…To assess its effectiveness, according to the reciprocity of underwater acoustic field, this study employs the hydrophone position as the central sound source and utilizes the parabolic equation, along with seabed topography and sound velocity profile data, to estimate the transmission loss. …”
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Study on Sound Wave Scattering Effects of Different Markers Placed on Dam Face in Deepwater Reservoir by Yan Xiang, GuangZe Shen, ZhengFei Cheng, Kai Zhang

“…Further, for relatively narrow underwater water space where the underwater detection equipment is located, there is significant interference to the underwater acoustic communication signal. This is a major challenge to underwater positioning technology. …”
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High-Precision Sub-Wavelength Motion Compensation Technique for 3D Down-Looking Imaging Sonar Based on an Acoustic Calibration System by Jun Wang, Peihui Liang, Junqiang Song, Pan Xu, Yongming Hu, Peng Zhang, Kang Lou, Rongyao Ren, Wusheng Tang

“…Three-dimensional hydro-acoustic imaging is a research hot spot in the underwater acoustic signal processing field, which has a wide range of application prospects in marine environmental resource surveying, seabed topography and geomorphological mapping, and underwater early warning and monitoring. …”
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Seasonal variation of underwater sound propagation in the Beibu Gulf by Feihong Zeng, Feihong Zeng, Lingling Xie, Lingling Xie, Lingling Xie, Mingming Li, Mingming Li, Mingming Li, Qiang Li, Qiang Li, Qiang Li, Simeng Liu, Simeng Liu

“…The results have significant implications for target detection, underwater acoustic communication, and the protection of aquatic animals that rely on underwater sound for survival in the Beibu Gulf.…”
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Energy-Efficient and Trust-Based Autonomous Underwater Vehicle Scheme for 6G-Enabled Internet of Underwater Things by Altaf Hussain, Shuaiyong Li, Tariq Hussain, Razaz Waheeb Attar, Ahmed Alhomoud, Reem Alsagri, Khalid Zaman

“…This paper introduces a novel energy-efficient lightweight, void hole avoidance, localization, and trust-based scheme, termed as Energy-Efficient and Trust-based Autonomous Underwater Vehicle (EETAUV) protocol designed for 6G-enabled underwater acoustic sensor networks (UASNs). The proposed scheme addresses key challenges in UASNs, such as energy consumption, network stability, and data security. …”
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Method and Spatiotemporal Analysis for Impervious Surface Extraction Based on an Improved DeepLabV3+ Model by Xueyi Wang, Bowen Fan, Yanguo Fan, Ran Xu, Guangyue Feng, Qingchun Guan

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