Results 11 to 20 of about 24,730 (232)

Diffraction Signal-Based Human Recognition in Non-Line-of-Sight (NLOS) Situation for Millimeter Wave Radar [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
In driver assistance or self-driving systems, millimeter-wave radar is an indispensable sensing tool because of its applicability to all weather conditions or non-line-of-sight (NLOS) sensing.This study focuses on a human recognition issue in the NLOS scenario by applying the support vector machine (SVM)-based machine learning approach to a diffraction
Jianghaomiao He, Shota Terashima, Hideyuki Yamada, Shouhei Kidera   +3 more
openaire   +3 more sources

Hyper-NLOS: hyperspectral passive non-line-of-sight imaging

Optics Express
Passive non-line-of-sight (NLOS) imaging has potential applications in autonomous driving and search and rescue, but current deep learning approaches often produce suboptimal images due to sparse and homogeneous projection features, leading to an ill-posed reconstruction process.
Mingyang Chen, Hao Liu, Shaohui Jin, Mengge Liu, Ziqin Xu, Xiaoheng Jiang, Ming Liang xu   +6 more
openaire   +2 more sources

Long distance non-line-of-sight (NLOS) visible light signal detection based on rolling-shutter-patterning of mobile-phone camera

Optics Express, 2017
We propose and demonstrate a long distance non-line-of-sight (NLOS) visible light signal detection based on the rolling shutter patterning using commercial mobile phone camera. By using our improved rolling shutter pattern demodulation algorithm, such as the background compensation (BC) blooming mitigation, extinction-ratio (ER) enhancement and Bradley
Wei-Chung, Wang, Chi-Wai, Chow, Liang-Yu, Wei, Yang, Liu, Chien-Hung, Yeh   +4 more
openaire   +3 more sources

The Impact of Vertical Salinity Gradient on Non-Line-of-Sight Underwater Optical Wireless Communication

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, Yujian Guo, Omar Alkhazragi, Meiwei Kong, Tien Khee Ng, Boon S. Ooi   +5 more
doaj   +1 more source

Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]

, 2009
Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A, Bard, M, Bari, RD, Cosmas, J, Ditto, P, Loo, KK, Nilavalan, R   +6 more
core   +1 more source

A Wi-Fi FTM-Based Indoor Positioning Method with LOS/NLOS Identification

Applied Sciences, 2020
In recent years, many new technologies have been used in indoor positioning. In 2016, IEEE 802.11-2016 created a Wi-Fi fine timing measurement (FTM) protocol, making Wi-Fi ranging more robust and accurate, and providing meter-level positioning accuracy ...
Minghao Si, Yunjia Wang, Shenglei Xu, Meng Sun, Hongji Cao   +4 more
doaj   +1 more source

Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems [PDF]

, 2011
In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated.
Montorsi, Francesco, Pancaldi, Fabrizio, Vitetta, Giorgio M.   +2 more
core   +1 more source

5G RF EMF Spectral Exposure Assessment in Four European Countries. [PDF]

Bioelectromagnetics
ABSTRACT This study assesses the exposure to 5G radio frequency electromagnetic fields (RF EMF) across four European countries. Spot measurements were conducted indoor and outdoor in both public spaces and educational institutions, encompassing urban and rural environments.
Deprez K, Stroobandt B, Veludo AF, Vecsei Z, Necz PP, Politański P, Verloock L, Polanska K, Thuróczy G, Röösli M, Plets D, Joseph W.   +11 more
europepmc   +2 more sources

TOA localization for multipath and NLOS environment with virtual stations

EURASIP Journal on Wireless Communications and Networking, 2017
An effective geometrical method which can locate a source based on the time-of-arrival (TOA) measurements and the floor plan information is proposed in simple non-line-of-sight (NLOS) indoor environment where the multiple-bound scattering signal paths ...
Deliang Liu, Ying Wang, Peng He, You Zhai, Hongyun Wang   +4 more
doaj   +1 more source

Mobile Location with NLOS Identification and Mitigation Based on Modified Kalman Filtering

Sensors, 2011
In order to enhance accuracy and reliability of wireless location in the mixed line-of-sight (LOS) and non-line-of-sight (NLOS) environments, a robust mobile location algorithm is presented to track the position of a mobile node (MN).
Wei Ke, Lenan Wu
doaj   +1 more source