Results 1 to 10 of about 17,502 (187)
Ultrasound synthetic aperture non-line-of-sight imaging [PDF]
Communications PhysicsNon-line-of-sight (NLOS) imaging typically relies on the use of ultrashort laser pulses and time-resolved detection to then reconstruct 3D environments that are hidden from the direct line-of-sight.
Tailin Li +6 more
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Material Classification from Non-Line-of-Sight Acoustic Echoes Using Wavelet-Acoustic Hybrid Feature Fusion [PDF]
SensorsAcoustic material classification under non-line-of-sight (NLOS) conditions—where direct sound paths are obstructed—is a challenging task due to echo attenuation, complex reflections, and noise effects. This study aims to improve NLOS material recognition
Dilan Onat Alakuş, İbrahim Türkoğlu
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A Localization Enhancement Method Based on Direct-Path Identification and Tracking for Future Networks [PDF]
SensorsLocalization is one of the essential problems in the Internet of Things (IoT). Dynamic changes in the radio environment may lead to poor localization accuracy or discontinuous localization in non-line-of-sight (NLOS) scenarios.
Yuhong Huang, Youping Zhao
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Multipath-Assisted Ultra-Wideband Vehicle Localization in Underground Parking Environment Using Ray-Tracing [PDF]
SensorsIn complex underground parking scenarios, non-line-of-sight (NLOS) obstructions significantly impede positioning signals, presenting substantial challenges for accurate vehicle localization.
Shuo Hu +3 more
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PI-NLOS: polarized infrared non-line-of-sight imaging
Optics Express, 2023 Passive non-line-of-sight (NLOS) imaging is a promising technique to enhance visual perception for the occluded object hidden behind the wall. Here we present a data-driven NLOS imaging framework by using polarization cue and long-wavelength infrared (LWIR) images.
Hao Liu +8 more
openaire +2 more sources
NLOS-NeuS: Non-line-of-sight Neural Implicit Surface
2023 IEEE/CVF International Conference on Computer Vision (ICCV), 2023 ICCV ...
Fujimura, Yuki +3 more
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Sensors, 2021 Under mixed sparse line-of-sight/non-line-of-sight (LOS/NLOS) conditions, how to quickly achieve high positioning accuracy is still a challenging task and a critical problem in the last dozen years.
Chengwen He, Yunbin Yuan, Bingfeng Tan
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A Succinct Method for Non-Line-of-Sight Mitigation for Ultra-Wideband Indoor Positioning System
Sensors, 2022 Ultra-wideband (UWB) is a promising indoor position technology with centimetre-level positioning accuracy in line-of-sight (LOS) situations. However, walls and other obstacles are common in an indoor environment, which can introduce non-line-of-sight ...
Ang Liu +3 more
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Range-Based Localization for UWB Sensor Networks in Realistic Environments
EURASIP Journal on Wireless Communications and Networking, 2010 The Non-Line of Sight (NLOS) problem is the major drawback for accurate localization within Ultra-Wideband (UWB) sensor networks. In this article, a comprehensive overview of the existing methods for localization in distributed UWB sensor networks under ...
Reiner S. Thomä +3 more
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IEEE Photonics Journal, 2021 The non-line-of-sight (NLOS) underwater communication can offer a viable route in signal propagation and coverage, thus mitigating the pointing, acquisition, and tracking difficulties in line-of-sight optical communication. However, implementing the NLOS
Mohammed Sait +5 more
doaj +1 more source