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Advances in Line-of-Sight Guidance for Path Following of Autonomous Marine Vehicles: An Overview

IEEE Transactions on Systems, Man, and Cybernetics: Systems, 2023
Autonomous marine vehicles (AMVs), including autonomous surface and underwater vehicles, are versatile means to explore, exploit, monitor, and protect marine resources and environments.
Nan Gu   +4 more
semanticscholar   +1 more source

Digital signal processing issues for wireless communication systems in Line of Sight(LOS) and Non Line of Sight (NLOS) environments

2016 International Conference on Circuit, Power and Computing Technologies (ICCPCT), 2016
This paper is written to convey the digital signal processing (DSP) issues experienced by wireless communication systems which are the limiting factors for enhanced spectral efficiency, link reliability and data rate, with respect to physical (PHY) layer and network throughput, latency and propagation delay pertaining to network layer for future ...
M. PremKumar   +3 more
openaire   +1 more source

A Non-Line-of-Sight Mitigation Method for Indoor Ultra-Wideband Localization With Multiple Walls

IEEE Transactions on Industrial Informatics, 2023
Ultra-wideband (UWB) ranging techniques can provide accurate distance measurement under line-of-sight (LOS) conditions. However, various walls and obstacles in indoor non-LOS (NLOS) environments, which obstruct the direct propagation of UWB signals, can ...
Meng Dong   +3 more
semanticscholar   +1 more source

Appointed-Time Cooperative Guidance Law With Line-of-Sight Angle Constraint and Time-to-go Control

IEEE Transactions on Aerospace and Electronic Systems, 2023
This article proposes a 3-D appointed-time cooperative guidance law for multiple missiles. The maneuvering target can be hit simultaneously by multiple missiles with different expected line-of-sight (LOS) angles.
Liangda Zhang   +4 more
semanticscholar   +1 more source

Service coverage optimization for facility location: considering line-of-sight coverage in continuous demand space

International Journal of Geographical Information Science, 2023
The reliable service coverage of many facilities or sensors used in smart city infrastructure is highly susceptible to obstructions in urban environments.
Xiaoya Ma, Xiaoyu Zhang, Xiang Zhao
semanticscholar   +1 more source

3D Non-Line-of-Sight Terahertz Imaging Using Mirror Folding

United States National Committee of URSI National Radio Science Meeting, 2022
We experimentally verify a reconstruction method for terahertz (THz) non-line-of-sight (NLoS) 3D imaging. In the THz band, common building surfaces exhibit both diffuse scattering and strong specular reflections.
Yiran Cui, G. Trichopoulos
semanticscholar   +1 more source

Spacecraft autonomous navigation using line-of-sight directions of non-cooperative targets by improved Q-learning based extended Kalman filter

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2023
Autonomous optical navigation is one of the most promising techniques to estimate the position and velocity of a spacecraft in Earth orbit without the supports of Earth-based tracking stations. To improve the navigation performance, this paper presents a
Kai Xiong, Pengjin Zhou, Chunling Wei
semanticscholar   +1 more source

Toward Reliable Non-Line-of-Sight Localization Using Multipath Reflections

Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies, 2022
The past decade's research in RF indoor localization has led to technologies with decimeter-level accuracy under controlled experimental settings. However, existing solutions are not reliable in challenging environments with rich multipath and various ...
Xianan Zhang   +3 more
semanticscholar   +1 more source

An efficient ‘image-based’ indoor propagation model for line-of-sight (LOS) and non-LOS applications

IEE Colloquium on `Propagation in Buildings', 1995
A three dimensional `image-based' ray tracing algorithm for indoor environments is presented. The model is capable of predicting wideband as well as narrowband propagation information for single floor scenarios. To show the practicality of such a model, the ray tracing engine has been used to investigate a typical indoor environment.
Athanasiadou, GE, Nix, AR, McGeehan, JP
openaire   +2 more sources

On Landau’s Eigenvalue Theorem for Line-of-Sight MIMO Channels

IEEE Wireless Communications Letters, 2022
An alternative derivation is provided for the degrees of freedom (DOF) formula on line-of-sight (LOS) channels via Landau’s eigenvalue theorem for bandlimited signals. Compared to other approaches, Landau’s theorem provides a general framework to compute
Andrea Pizzo, A. Lozano
semanticscholar   +1 more source

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