Results 11 to 20 of about 21,038 (76)

Communication Technology of Far-Sea Cross-Domain Buoys Based on High Frequency Sky-Wave Propagation

水下无人系统学报
High frequency(HF) sky-wave propagation is limited by the working frequency, and the antenna size meeting high gain and adapting to high sea conditions is large, so the application scenario is seriously limited.
Longzhong XIAO, Song ZHANG, Zhenji LIU, Yi ZHAO   +3 more
doaj   +1 more source

Analysis of Induced Current and Electromagnetic Safety of Bridge-Wire Electric Explosive Device

水下无人系统学报
Based on the basic theory of electromagnetic fields, the formation of the equivalent antenna of an electric explosive device(EED) and its energy conversion process were analyzed, and CST software was used to simulate and model the formation of induced ...
Xiaonan ZHU, Jin PAN, Jinhou YANG, Kaiguo WANG, Xiaochuan LIN   +4 more
doaj   +1 more source

Review of the Development on Load Reduction Methods for Water Entry of High-Speed Vehicles

水下无人系统学报
The water entry process of high-speed vehicles involves complex fluid-structure interaction between multiple phase flows and vehicles, which can result in transient impact loads and potential structural damage.
Wei ZHENG, Qiang LI, Xudong FAN, Xujian LÜ   +3 more
doaj   +1 more source

Flow Field and Motion Characteristics of Trans-Medium Submersible during Take-off and Landing on Water Surface

水下无人系统学报
In order to explore the evolution of the flow field structure and motion characteristics of the trans-medium submersible during the take-off and landing on water surface, the volume of fluid(VOF) multiphase flow model, the shear stress transfer(SST) k-ω ...
Deshun LU, Shaoqian ZHANG, Haoyu WANG, Tiezhi SUN   +3 more
doaj   +1 more source

Numerical Simulation of Water Entry Process of Trans-Medium Vehicles

水下无人系统学报
The trans-medium water entry process of vehicles is often accompanied by multiphase flow, cavitation, phase change, and turbulence instability, which not only heighten the complexity of the flow field, but also render the forces highly unsteady and ...
Pingan LIU, Hongtao GAO, Yanxi YANG, Xi HUANG, Song GAO, Zhentao JI   +5 more
doaj   +1 more source

Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint

水下无人系统学报
In high-latitude areas, the icing period is inevitable during winter. In view of the special mechanical environment of ice cracks faced during underwater launching in low-temperature ice zones, it is of great engineering value to expand the application ...
Hao WANG, Zhengui HUANG, Zhihua CHEN, Zeqing GUO, Yihang WANG, Xiangyan LIU, Xiaodong NA   +6 more
doaj   +1 more source

Comments on the Use of 3D Printing Technology in the Design of an AUV Destined for the Identification and Destruction of Underwater Mines

Journal of Eta Maritime Science, 2023
The International Maritime Organization and the North Atlantic Treaty Organization are today, enforcing increasingly stringent rules for maritime safety and security on a national and international scale.
Mihaela Greti Manea, Catalin-Paul Clinci, Ovidiu Cristea   +2 more
doaj   +1 more source

Research status and prospects of satellite-shore-based integrated network technology for remotely-controlled ships

Zhongguo Jianchuan Yanjiu
The purpose of this work is to optimize the communication architecture for existing remotely-controlled ships to meet the challenges of network connectivity in diverse environments (e.g., ports, deep-sea, and polar regions), aiming to address the issues ...
Xinjue HU, Qi LI, Jialun LIU, Yunlong ZHOU, Nan LIN, Shijie LI   +5 more
doaj   +1 more source

Ship motion identification model based on enhanced Bi-LSTM

Zhongguo Jianchuan Yanjiu
ObjectiveAiming at the low prediction precision and poor adaptability of ship models based on the data-driven modeling strategy, an enhanced bi-directional long short-term memory (Bi-LSTM) model is proposed for the high-precision non-parametric modeling ...
Haozhe ZHANG, Zhibo YANG, Xuguo JIAO, Chengxing LÜ, Peng LEI   +4 more
doaj   +1 more source

Stage-induced learning-based cooperative target hunting strategy for multiple unmanned surface vehicles

Zhongguo Jianchuan Yanjiu
Objectives Aiming at the intelligent escape problem of marine target unmanned surface vehicles (USVs), this paper proposes an enhanced cooperative target hunting strategy which is designed to improve the performance of multi-USV systems in capturing ...
Xingru QU, Yuze JIANG, Feifei LONG, Rubo ZHANG, Ying GAO   +4 more
doaj   +1 more source