Results 41 to 50 of about 959,413 (134)
Robust design of a machine learning-based GNSS NLOS detector with multi-frequency features
Frontiers in Robotics and AI, 2023 The robust detection of GNSS non-line-of-sight (NLOS) signals is of vital importance for land- and close-to-land-based safe navigation applications. The usage of GNSS measurements affected by NLOS can lead to large unbounded positioning errors and loss ...
Omar García Crespillo +3 more
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Hippocampus, 2015 ABSTRACTThe discoveries of “place cells” in the hippocampus and “grid cells” in the entorhinal cortex are landmark achievements in relating behavior to neural activity, permitting analysis of a powerful system for spatial representation in the brain. The contributions of this work include not only the empirical findings but also the approach this work ...
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e-Navigation and Electronic Charting: Implications for Hydrographic Community [PDF]
, 2009 e-Navigation is a recent IMO initiative that aims to integrate existing/new shipboard and shore-based navigational tools into an “all embracing” system. Defined as: “...
Alexander, Lee
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Navigation Objects Extraction for Better Content Structure Understanding
, 2017 Existing works for extracting navigation objects from webpages focus on navigation menus, so as to reveal the information architecture of the site. However, web 2.0 sites such as social networks, e-commerce portals etc.
Bu, Jiajun +4 more
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The Design of Bulk Carrier Cargo Holds State Integrated Monitoring System
MATEC Web of Conferences, 2016 Most ship cargo hold Internal uses artificial watch or is unattended. Therefore, it is impossible to know the appropriate information of the cargo holds Internal timely and accurately. Cargo damage and ship accidents occurred frequently.
Gao Ru-jiang +5 more
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Direct Passive Navigation [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 1987 In this correspondence, we show how to recover the motion of an observer relative to a planar surface from image brightness derivatives. We do not compute the optical flow as an intermediate step, only the spatial and temporal brightness gradients (at a minimum of eight points).
Negahdaripour, Shahriar +1 more
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Autonomous Spacecraft Navigation With Pulsars [PDF]
, 2013 An external reference system suitable for deep space navigation can be defined by fast spinning and strongly magnetized neutron stars, called pulsars.
Becker, Werner +2 more
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Research on Scenario Deduction of Mass Life-Threatening Incidents at Sea Based on Bayesian Network
Journal of Marine Science and EngineeringThe growth of the cruise industry and rising passenger numbers have led to an increase in cruise-related accidents, presenting challenges for mass rescue operations.
Qiaojie Wang +6 more
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Finite-time ship formation control based on extended state observer
Zhongguo Jianchuan Yanjiu, 2023 ObjectiveIn order to solve the problems of most current ship formation control algorithms such as their long control cycle and poor timeliness, this paper proposes a finite-time control strategy based on an extended state observer (ESO).MethodsFirst, a ...
Jun NING +5 more
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COLREGS-based Path Planning for Ships at Sea Using Velocity Obstacles
IEEE Access, 2021 Recent studies have made significant development in path planning for ships. However some studies blindly obey rules of COLREGS (International Regulations for Preventing Collisions at Sea) or only adopt turning to starboard ignoring actual practice, like,
Wenjun Zhang +6 more
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