Results 71 to 80 of about 959,413 (134)

A Study on Container Storage Optimization in Yards Based on a Hyper-Heuristic Algorithm with a Q-Learning Mechanism

International Journal of Computational Intelligence Systems
In the context of a low-carbon economy, scientific methods to reduce carbon emissions have become an important issue for many ports. Carbon emissions in port areas mainly arise from vessels and handling equipment.
Lifen Chen, Jiajun Lin, Shihao Xu
doaj   +1 more source

A Review of Autonomous Berthing Technology for Ships

Journal of Marine Science and Engineering
Autonomous berthing technology is a crucial engineering control problem within the ship intelligence system, encompassing a series of complex operations and technologies.
Jiangliu Cai, Guoquan Chen, Jian Yin, Chong Ding, Yongfeng Suo, Jinhai Chen   +5 more
doaj   +1 more source

Modelling the satellite communication links with orthogonal frequency-division multiplexing

Transport, 2016
Global technologies of data transmission in real time are developing constantly. Therefore, modelling of messages transmission through satellite constellations is an actual problem.
Volodymir Kharchenko, Bo Wang, Andrii Grekhov, Anna Leschenko   +3 more
doaj   +1 more source

Autonomous Spacecraft Navigation Based on Pulsar Timing Information

, 2011
We discuss the possibility of an autonomous navigation system for spacecraft that is based on pulsar timing data. Pulsars are rapidly rotating neutron stars that are observable as variable celestial sources of electromagnetic radiation.
Becker, Werner, Bernhardt, Mike Georg, Breithuth, Ferdinand Maximilian, Prinz, Tobias, Walter, Ulrich   +4 more
core   +1 more source

A Novel Unmanned Surface Vehicle Path-Planning Algorithm Based on A* and Artificial Potential Field in Ocean Currents

Journal of Marine Science and Engineering
Ocean currents make it difficult for unmanned surface vehicles (USVs) to keep a safe distance from obstacles. Effective path planning should adequately consider the effect of ocean currents on USVs.
Chaopeng Yang, Jiacai Pan, Kai Wei, Mengjie Lu, Shihao Jia   +4 more
doaj   +1 more source

SDFSD-v1.0: A Sub-Meter SAR Dataset for Fine-Grained Ship Detection

Remote Sensing
In the field of target detection, a prominent area is represented by ship detection in SAR imagery based on deep learning, particularly for fine-grained ship detection, with dataset quality as a crucial factor influencing detection accuracy.
Peixin Cai, Bingxin Liu, Peilin Wang, Peng Liu, Yu Yuan, Xinhao Li, Peng Chen, Ying Li   +7 more
doaj   +1 more source

Hydrographic Products/Services as a Fundamental Component of the e-Navigation Concept of Operation [PDF]

, 2010
e-Navigation is a recent initiative aimed at moving traditional maritime navigation towards a connected digital environment. Defined by the International Maritime Organization (IMO) as “the harmonized collection, integration, exchange, presentation and ...
Alexander, Lee, Ward, Robert
core   +1 more source

Detecting Ship-to-Ship Transfer by MOSA: Multi-Source Observation Framework with SAR and AIS

Remote Sensing
Ship-to-ship (STS) transfer has become a major concern for maritime security and regulatory authorities, as it is frequently exploited for smuggling and other illicit activities. Accurate and timely identification of STS events is therefore essential for
Peixin Cai, Bingxin Liu, Xiaoyang Li, Xinhao Li, Siqi Wang, Peng Liu, Peng Chen, Ying Li   +7 more
doaj   +1 more source

SM-DPC: Clustering by Fast Search and Find of Density Peaks Based on SNN With Multi-Cluster Fusion Strategy

IEEE Access
The Clustering by Fast Search and Find of Density Peaks (DPC) algorithm is a clustering method that automatically identifies clustering centers based on density and relative distance.
Shibo Zhou, Bingbing Peng, Wenpeng Xu, Luzhen Ren   +3 more
doaj   +1 more source

An Anti-Occlusion Approach for Enhanced Unmanned Surface Vehicle Target Detection and Tracking with Multimodal Sensor Data

Journal of Marine Science and Engineering
Multimodal sensors are often employed by USVs (unmanned surface vehicles) to enhance situational awareness, and the fusion of LiDAR and monocular vision is widely used in near-field perception scenarios.
Minjie Zheng, Dingyuan Li, Guoquan Chen, Weijun Wang, Shenhua Yang   +4 more
doaj   +1 more source