Results 91 to 100 of about 2,653,958 (217)

Distributed MPC for autonomous ships on inland waterways with collaborative collision avoidance [PDF]

arXiv
This paper presents a distributed solution for the problem of collaborative collision avoidance for autonomous inland waterway ships. A two-layer collision avoidance framework that considers inland waterway traffic regulations is proposed to increase navigational safety for autonomous ships.
arxiv  

Heterogeneous Vehicles Routing for Water Canal Damage Assessment [PDF]

arXiv, 2018
In Japan, inspection of irrigation water canals has been mostly conducted manually. However, the huge demand for more regular inspections as infrastructure ages, coupled with the limited time window available for inspection, has rendered manual inspection increasingly insufficient.
arxiv  

Assessment of Cryptographic Approaches for Quantum-Resistant Galileo OSNMA

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As time goes on, quantum computing has become more of a reality, bringing several cybersecurity challenges. Modern cryptography is based on the computational complexity of specific mathematical problems; however, as new quantum-based computers are ...
Javier Junquera-Sánchez, Carlos Hernando-Ramiro, Oscar Gamallo-Palomares, José-Antonio Gómez-Sánchez   +3 more
doaj   +1 more source

Synthesized Binary Offset Carrier Modulation for Interoperable GNSS L1 Band Signals

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This paper presents a constant-envelope modulation scheme, based on a synthesized binary offset carrier (SBOC), for a global navigation satellite system (GNSS) that combines three signals in a nonlinear fashion with unequal amplitudes.
Dhaval J. Upadhyay, Vijay S. Bhadouria, Parimal J. Majithiya, Subhash C. Bera   +3 more
doaj   +1 more source

Array-Aided Precise Orbit and Attitude Determination of CubeSats using GNSS

Navigation
CubeSats hold promise for various applications, but their viability in demanding missions such as future low Earth orbiting position, navigation, and timing (LEO-PNT) systems hinges on higher orbital accuracy and reliable attitude information. To address
Amir Allahvirdi-Zadeh, Ahmed El-Mowafy
doaj   +1 more source

Deep Visual Waterline Detection within Inland Marine Environment [PDF]

arXiv, 2019
Waterline usually plays as an important visual cue for maritime applications. However, the visual complexity of inland waterline presents a significant challenge for the development of highly efficient computer vision algorithms tailored for waterline detection in a complicated inland water environment.
arxiv  

Kalman Filtering with Uncertain and Asynchronous Measurement Epochs

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This paper develops an asynchronous measurement processing technique for sequential filtering that effectively handles small errors in the measurement sampling epoch within a linearized framework.
James D. Brouk, Kyle J. DeMars
doaj   +1 more source

Dynamic Semantic World Models and Increased Situational Awareness for Highly Automated Inland Waterway Transport. [PDF]

Front Robot AI, 2021
Van Baelen S, Peeters G, Bruyninckx H, Pilozzi P, Slaets P.   +4 more
europepmc   +1 more source

Weiss–Weinstein Bound of Frequency Estimation Error for Very Weak GNSS Signals

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Tightness remains the primary goal in all modern estimation bounds. For very weak signals, tightness is enabled by appropriately selecting the prior probability distribution and bound family.
Xin Zhang, Xingqun Zhan, Jihong Huang, Jiahui Liu, Yingchao Xiao   +4 more
doaj   +1 more source

Biodiversity of aquatic organisms in the Mekong Delta, Vietnam. [PDF]

Biodivers Data J, 2023
Seleznev DG, Dinh CN, Hai TB, Karpova EP, Kim Chi DT, Kosolapov DB, Kosolapova NG, Malin MI, Malina IP, Man LQ, Prokin AA, Prusova IY, Sharov AN, Statkevich SV, Tsvetkov AI, Udodenko YG, Zakonnov VV, Zhdanova SM, Krylov AV, Tiunov AV.   +19 more
europepmc   +1 more source