Results 1 to 10 of about 80,566 (262)

Deep Non-Line-of-Sight Imaging Using Echolocation [PDF]

open access: yesSensors, 2022
Non-line-of-sight (NLOS) imaging is aimed at visualizing hidden scenes from an observer’s (e.g., camera) viewpoint. Typically, hidden scenes are reconstructed using diffused signals that emit light sources using optical equipment and are reflected ...
Seungwoo Jang   +2 more
doaj   +4 more sources

A Single-Shot Non-Line-of-Sight Range-Finder [PDF]

open access: yesSensors, 2019
The ability to locate a target around a corner is crucial in situations where it is impractical or unsafe to physically move around the obstruction. However, current techniques are limited to long acquisition times as they rely on single-photon counting ...
James Brooks, Daniele Faccio
doaj   +6 more sources

Ultrasound synthetic aperture non-line-of-sight imaging [PDF]

open access: yesCommunications Physics
Non-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
doaj   +2 more sources

A Line of Sight/Non Line of Sight Recognition Method Based on the Dynamic Multi-Level Optimization of Comprehensive Features [PDF]

open access: yesSensors
With the advent of the 5G era, high-precision localization based on mobile communication networks has become a research hotspot, playing an important role in indoor emergency rescue in shopping malls, smart factory management and tracking, as well as ...
Ziyao Ma   +5 more
doaj   +2 more sources

Improving Non-Line-of-Sight Identification in Cellular Positioning Systems Using a Deep Autoencoding and Generative Adversarial Network Model [PDF]

open access: yesSensors
Positioning service is a critical technology that bridges the physical world with digital information, significantly enhancing efficiency and convenience in life and work.
Yanbiao Gao   +3 more
doaj   +2 more sources

A dataset for Wi-Fi-based human activity recognition in line-of-sight and non-line-of-sight indoor environments [PDF]

open access: yesData in Brief, 2020
The aim of this paper is to present a dataset for Wi-Fi-based human activity recognition. The dataset is comprised of five experiments performed by 30 different subjects in three different indoor environments.
Baha’ A. Alsaify   +3 more
doaj   +2 more sources

Phasor field diffraction based reconstruction for fast non-line-of-sight imaging systems [PDF]

open access: yesNature Communications, 2020
Current implementations of non-line-of-sight imaging use reconstruction algorithms that are difficult to implement fast enough for real-time application using light efficient equipment.
Xiaochun Liu   +2 more
doaj   +2 more sources

Constrained L1-Norm Minimization Method for Range-Based Source Localization under Mixed Sparse LOS/NLOS Environments

open access: yesSensors, 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
doaj   +1 more source

Line-of-sight and non-line-of-sight links for dispersive terahertz wireless networks

open access: yesAPL Photonics, 2021
Despite the rapidly growing interest in exploiting millimeter and terahertz waves for wireless data transfer, the role of reflected non-line-of-sight (NLOS) paths in wireless networking is one of the least explored questions.
Yasaman Ghasempour   +4 more
doaj   +1 more source

Path Loss Measurements and Model Analysis in an Indoor Corridor Environment at 28 GHz and 38 GHz

open access: yesSensors, 2022
This paper examines the large-scale path loss models for an indoor corridor environment at frequencies of 28 and 38 GHz. The measurement environment consists of an indoor corridor with both line-of-sight (LOS) and non-line of sight (NLOS) scenarios using
Tolulope T. Oladimeji   +2 more
doaj   +1 more source

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