Results 181 to 190 of about 24,730 (232)
Some of the next articles are maybe not open access.
Kriging estimator for mobile station positioning under non-line-of-sight (NLOS) conditions
2007 International Conference on Communications, Circuits and Systems, 2007Estimation of mobile station location is made difficult by nonsymmetric contamination of measured data caused by NLOS propagation effects. In this paper, a novel algorithm based on kriging method is proposed to reduce the effects of NLOS propagation on the location error. Simulation results show that the proposed algorithm clearly outperforms two other
J.Y. Huang, Z.X. Chen, Q. Wan, W.L. Yang
openaire +1 more source
Entangled and non-line-of-sight (NLOS) free-space photon quantum communication [Invited]
Journal of Optical Networking, 2005Feature Issue on Optical Wireless Communications (OWC) We present new quantum communication (QC) schemes suitable for free-space (wireless) QC implementation. In particular, we present several entangled QC schemes and propose non-line-of-sight (NLOS) free-space photon QC.
Ronald E. Meyers, Keith S. Deacon
openaire +1 more source
NLOST: Non-Line-of-Sight Imaging with Transformer
Computer Vision and Pattern Recognition, 2023Time-resolved non-line-of-sight (NLOS) imaging is based on the multi-bounce indirect reflections from the hidden objects for 3D sensing. Reconstruction from NLOS measurements remains challenging especially for complicated scenes. To boost the performance,
Yue Li +5 more
semanticscholar +1 more source
Non-Line-of-Sight Multi-Target Localization Algorithm for Driver-Assistance Radar System
IEEE Transactions on Vehicular Technology, 2023In automatic driving, it is difficult for automotive radar to capture the information of vehicles and pedestrians located in blind areas such as street corners and urban intersections, which may lead to collision risks.
Jiahui Chen +4 more
semanticscholar +1 more source
Detection methodologies to overcome Non line of Sight (NLOS) in Adhoc Networks: A Survey
2019 International Conference on Computer Communication and Informatics (ICCCI), 2019In Vehicular Ad-hoc networks (VANETs) one of the pioneer applications is exchange of emergency messages to identify the location information of the emergency and nonemergency vehicles. But, the presence of obstacles like building infrastructure, trucks and other environmental factors can create Non Line Of Sight (NLOS) which prevents the direct ...
R. Kaviarasan, A. Amuthan
openaire +1 more source
A Non-Line-of-Sight Mitigation Method for Indoor Ultra-Wideband Localization With Multiple Walls
IEEE Transactions on Industrial Informatics, 2023Ultra-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
Non-Line-of-Sight Targets Localization Algorithm via Joint Estimation of DoD and DoA
IEEE Transactions on Instrumentation and Measurement, 2023Non-line-of-sight (NLOS) radar has the feature of detecting the targets that are in the blind area, while the existing time-of-arrival (ToA)-based methods limit its further development in multitarget environments.
Zhihao Zhu +7 more
semanticscholar +1 more source
Enhancing Non-line-of-sight Imaging via Learnable Inverse Kernel and Attention Mechanisms
IEEE International Conference on Computer Vision, 2023Recovering information from non-line-of-sight (NLOS) imaging is a computationally-intensive inverse problem. Most physics-based NLOS imaging methods address the complexity of this problem by assuming three-bounce reflections and no self-occlusion ...
Yanhua Yu +9 more
semanticscholar +1 more source
Non-Line-of-Sight Imaging with Signal Superresolution Network
Computer Vision and Pattern Recognition, 2023Non-line-of-sight (NLOS) imaging aims at reconstructing the location, shape, albedo, and surface normal of the hidden object around the corner with measured transient data.
Jianyu Wang +5 more
semanticscholar +1 more source
A simulation model of back-projection based non-line-of-sight imaging (NLOS) for resolution analysis
International Conference on Signal Image Processing and Communication (ICSIPC 2021), 2021The problem to image around a corner for objects that are invisible from direct line-of-sight is intriguing as its solution may provide the basis for new methods in various fields. However, most current researches are based on back-projectionrelated methods, of which a quantitative analysis of resolution is missing.
openaire +1 more source