Results 61 to 70 of about 28,552 (197)
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
doaj +1 more source
Coverage Analysis in the Uplink of mmWave Cellular Network [PDF]
, 2017 In this paper, we present an analytical framework to evaluate the coverage in the uplink of millimeter wave (mmWave) cellular networks. By using a distance dependent line-of-sight (LOS) probability function, the location of LOS and non-LOS user equipment
Imran, Ali +2 more
core +1 more source
Molecular engineering of NLO-phores for new NLO microscopies
Comptes Rendus. Physique, 2002 Novel microscopies based on nonlinear optical (NLO) phenomena such as two-photon excited fluorescence (TPEF) and second-harmonic generation (SHG) have gained overwhelming popularity in the biology community owing to the many advantages they provide in biological imaging.
openaire +1 more source
Multi‐Soliton Microcombs Enable Ultrafast Nanometric‐Precision Ranging and Photon‐Level Detection
Advanced Science, EarlyView.Our work first demonstrates dual‐multi‐soliton ranging and confirms its multifunctional capability. The method achieves ultrafast and nanometric‐precision measurement. For practical applications, we further extend the multi‐soliton states to photon‐level ranging.
Jiawen Zhi +10 more
wiley +1 more source
A fusion positioning method for underground personnel based on UWB and PDR
Gong-kuang zidonghuaMost existing fusion positioning methods for ultra-wideband (UWB) and pedestrian dead reckoning (PDR) ignore the correction of positioning errors in non line of sight (NLOS) environments.
JIA Yutao +5 more
doaj +1 more source
Near‐Infrared Cocrystal Nanofluorophore with Enhanced Two‐Photon Absorption Cross Sections
Advanced Science, EarlyView.In this study, organic cocrystal nanoparticles (BP4TC‐NPs) were prepared via a nanoprecipitation method using an amphiphilic surfactant. The resulting cocrystal nanoparticles exhibit exceptional nonlinear optical properties and bioimaging capabilities.
Liangmeng Hao +8 more
wiley +1 more source
UWB Positioning Algorithm Based on Fuzzy Inference and Adaptive Anti-NLOS Kalman Filtering
Applied Sciences, 2022 To reduce the influence of non-line-of-sight (NLOS) errors in the ultra-wideband (UWB) positioning process, a UWB positioning algorithm based on fuzzy inference and adaptive anti-NLOS Kalman filtering (KF) was proposed in this paper.
Junkang Wu +4 more
doaj +1 more source
Distributed Cooperative Localization in Wireless Sensor Networks without NLOS Identification [PDF]
, 2014 In this paper, a 2-stage robust distributed algorithm is proposed for cooperative sensor network localization using time of arrival (TOA) data without identification of non-line of sight (NLOS) links.
Champagne, Benoit +2 more
core
Research Progress of Polyoxometalate‐Integrated Frameworks: Syntheses, Properties, and Applications
ChemistryEurope, EarlyView.This review systematically summarizes the integration of polyoxometalates with covalent organic frameworks, metal‐organic frameworks, hydrogen‐bonded organic frameworks, and emerging porous hosts. It highlights synergistic effects, synthesis strategies, and applications in catalysis, energy storage, sensing, and biomedicine, while addressing current ...
De‐Yin Wang +6 more
wiley +1 more source
Yeni Nesil Kablosuz Ağ Teknolojisi: Wimax Standardının İncelenmesi
Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2016 Wimax (Worldwide Interoperability for Microwave Access) teknolojisi, Wimax Forum tarafından çeşitli standartları geliştirilen, geniş alanda iletişim sağlayan bir kablosuz ağ teknolojisidir. Çalışma boyunca Wimax hakkında bilgi verilmiştir.
Arafat Şentürk +4 more
doaj