Results 51 to 60 of about 255 (170)

Vector Propulsion AUV Path Planning Method Based on Deep Reinforcement Learning

水下无人系统学报
This study proposed a joint control method of “rudder + vector thruster” and utilized deep reinforcement learning technology to allocate the usage ratio of rudder and vector nozzle, enabling autonomous undersea vehicles(AUVs) to achieve enhanced path ...
Zhouqi PANG, Xiaobo LIN, Chengpeng HAO, Wenxin CHENG   +3 more
doaj   +1 more source

Findings from a Combined Subsea LiDAR and Multibeam Survey at Kingston Reef, Western Australia

Remote Sensing, 2020
Light Detection and Ranging (LiDAR), a comparatively new technology in the field of underwater surveying, has principally been used for taking precise measurement of undersea structures in the oil and gas industry.
Simon Collings, Tara J. Martin, Emili Hernandez, Stuart Edwards, Andrew Filisetti, Gavin Catt, Andreas Marouchos, Matt Boyd, Carl Embry   +8 more
doaj   +1 more source

Impact of Fluid Flow on Bacterial Carbon and Sulfur Cycling, Mineral Precipitation, and Transformation in Hydrothermal Sediments off the Coast of Milos

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 7, July 2026.
Abstract Hydrothermal fluid flow not only shapes mineral deposition on the ocean floor but also creates ecological niches by altering temperature and energy availability. In these niches, microbial life thrives and has an additional, often unrecognized impact on mineral formation. In a newly discovered vent field at water depths of 100–200 m off Milos,
J. M. Maak, C. Röttgen, B. Winkelhues, E. Anagnostou, S. I. Bühring, A. Koschinsky, J. Liao, H. Strauss, C. Vogt, W. Bach, E. Schefuß, M. Elvert   +11 more
wiley   +1 more source

Parameter Tuning Method of Active Disturbance Rejection Controller for AUVs Based on VRFT

水下无人系统学报
Active disturbance rejection control(ADRC) is model-independent and exhibits strong robustness against disturbances, effectively addressing the uncertainties of autonomous undersea vehicle(AUV) models and complex external environments. However, parameter
Xiaodong HOU, Rui YANG, Ming LI
doaj   +1 more source

Glacial Ice‐Front Calving: Internal Wave Generation and Melting

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Small, frequent calving events dominate the behavior of most Arctic marine‐terminating glaciers, yet their oceanographic impacts remain largely unquantified. We present the first direct observations of internal waves generated by modest ice‐fall calving at Kronebreen, Svalbard. High‐resolution current meter and microstructure measurements show
M. E. Inall, N. J. Fraser, A. Sundfjord, M. P. Meredith   +3 more
wiley   +1 more source

Error Compensation for Dead Reckoning Based on SVM

水下无人系统学报
In the use of machine learning methods for error compensation in dead reckoning of an autonomous undersea vehicle(AUV), the neural network algorithm is commonly used.
Xin LI, Xiaoming WANG, Jianguo WU, Jiwei ZHAO, Jiacheng XIN, Kai CHEN, Bin ZHANG   +6 more
doaj   +1 more source

Geographic Variation in Diving Behaviour and Skin Isotope Ratios of Northern Bottlenose Whales, Hyperoodon ampullatus

Ecology and Evolution, Volume 16, Issue 6, June 2026.
High‐resolution multi‐sensor tag data from northern bottlenose whale populations in the northeast and northwest Atlantic showed differences in resting and foraging time budgets and behaviour. Skin biopsy stable isotopes corroborated likely dietary differences. Variability between populations has far‐reaching relevance for ecology and conservation, with
Sascha K. Hooker, Eilidh Siegal, Tessa Plint, Laura J. Feyrer, Tomoko Narazaki, Kagari Aoki, Matt Bivins, Patrick J. O. Miller   +7 more
wiley   +1 more source

Recent advances in organic broad‐spectrum photodetection materials and devices

InfoMat, Volume 8, Issue 6, June 2026.
This review systematically outlines the evolution of organic photodetectors from fullerene‐based to advanced non‐fullerene acceptors, highlighting how molecular engineering (e.g., D–A, quinoidal, and A‐D‐A′‐D‐A architectures) extends spectral response into the short‐wave infrared region.
Yilin Zhao, Shijia Tan, Deyang Ji, Wenping Hu   +3 more
wiley   +1 more source

A Real-time Motion Planning Algorithm for AUV based on IDVD Method

水下无人系统学报
To enhance the intelligence of autonomous undersea vehicles(AUVs), this paper proposed a real-time motion planning algorithm based on the inverse dynamic virtual domain(IDVD) method, ensuring safe navigation in unknown environments with obstacles.
Guoshun LIU, Wei GUO, Yanjun LAN, Yifan FU   +3 more
doaj   +1 more source

Design and Application Progress of Biomimetic Seal Whisker Sensors for Underwater Flow Field Sensing

水下无人系统学报
Marine environment sensing, especially high-precision underwater flow field sensing, is vital for marine resource exploration, autonomous undersea vehicle(AUV) operations, and national defense.
Xingfu WAN, Xinyue ZHOU, Siyuan WANG, Mengwei WU, Peng XU, Minyi XU   +5 more
doaj   +1 more source