Results 41 to 50 of about 11,066 (147)

A Neural-Enhanced Factor Graph-Based Algorithm for Robust Positioning in Obstructed LOS Situations

open access: yesIEEE Open Journal of Signal Processing
This paper presents a neural-enhanced probabilistic model and corresponding factor graph-based sum-product algorithm for robust localization and tracking in multipath-prone environments. The introduced hybrid probabilistic model consists of physics-based
Alexander Venus   +3 more
doaj   +1 more source

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

open access: yesSensors, 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

An effective indicator for NLOS, nLOS, LOS propagation channels conditions

open access: yes, 2012
A simple and physically-based index is proposed to identify among Line-of-Sight (LOS), near Line-of-Sight (nLOS) and Non-Line-of-Sight (NLOS) channel propagation conditions.
MIGLIACCIO, Maurizio   +7 more
core   +1 more source

A Novel Mobile Localization Method for Distributed Sensor Network with Non-Line-of-Sight Error Mitigation

open access: yesInternational Journal of Distributed Sensor Networks, 2014
Mobile localization using distributed sensor network has attracted significant research interest in recent years. One of the main challenges for mobile location estimation is the presence of the non-line-of-sight (NLOS) propagation.
Nan Hu, Hao Wu, Chengdong Wu, Yuan Gao
doaj   +1 more source

Yeni Nesil Kablosuz Ağ Teknolojisi: Wimax Standardının İncelenmesi

open access: yesDüzce 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  

NLOS-NeuS: Non-line-of-sight Neural Implicit Surface

open access: yes, 2023
Non-line-of-sight (NLOS) imaging is conducted to infer invisible scenes from indirect light on visible objects. The neural transient field (NeTF) was proposed for representing scenes as neural radiance fields in NLOS scenes.
Fujimura, Yuki   +3 more
core  

Omnidirectional mobile NLOS identification and localization via multiple cooperative nodes

open access: yes, 2012
This paper presents an Omnidirectional mobile target-node (TN) localization technique in nonline-of-sight (NLOS) scenarios. Here, a TN cooperates with base-nodes (BNs) with antenna-arrays to allow them to find its position via time-of-arrival (TOA) and ...
Seyed A. Zekavat   +3 more
core   +1 more source

Estimation of no-line-of-sight sound source using ratio of peak and root mean square values of cross correlation function

open access: yesNihon Kikai Gakkai ronbunshu, 2019
Estimation of no-line-of-sight (NLOS) condition is a key technology for practical indoor localization. In this paper, a novel method to estimate the NLOS sound source using ratio of peak and root mean square values of cross correlation function is ...
Taichi HAYASHI   +2 more
doaj   +1 more source

NLOS Identification and Correction Based on Multidimensional Scaling and Quasi-Accurate Detection

open access: yesIEEE Access, 2019
In wireless sensor networks, most of the previous NLOS identification is based on error estimation model established by raw data. In this paper, we propose a method of NLOS identification named NIMQ based on multidimensional scaling (MDS) and Quasi ...
Yuhong Zhu   +6 more
doaj   +1 more source

A new multi-antenna based LOS - NLOS separation technique

open access: yes, 2009
This paper introduces a line-of-sight (LOS) and non-LOS (NLOS) separation technique based on the statistics of the phase difference of two received signals. The phase difference is achieved via a co-installed synchronized two-receiver system.
S.A. Zekavat   +5 more
core   +1 more source

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