Results 31 to 40 of about 11,066 (147)

Semi-parametric geolocation estimation in NLOS environments [PDF]

open access: yes, 2013
The position of a stationary target can be determined using triangulation in combination with time of arrival measurements at several sensors. In urban environments, none-line-of-sight (NLOS) propagation leads to biased time estimation and thus to ...
Hammes, Ulrich   +2 more
core   +2 more sources

A Triple-Filter NLOS Localization Algorithm Based on Fuzzy C-means for Wireless Sensor Networks

open access: yesSensors, 2019
With the rapid development of communication technology in recent years, Wireless Sensor Network (WSN) has become a promising research project. WSN is widely applied in a number of fields such as military, environmental monitoring, space exploration and ...
Long Cheng   +5 more
doaj   +1 more source

Simulation of NLOS (non-line-of-sight) 3D imaging system

open access: yes, 2017
This passage studies on theory and scene simulation of NLOS imaging. Based on math and physical properties, a simulation platform is built for a NLOS imaging system, including a femtosecond laser, a scanning galvo system, a lambertian surface, several ...
Zhaoqi Wei   +7 more
core   +1 more source

GNSS Urban Positioning with Vision-Aided NLOS Identification

open access: yes, 2022
The global navigation satellite system (GNSS) has played an important role in a broad range of consumer and industrial applications. In particular, cities have become GNSS major application scenarios; however, GNSS signals suffer from blocking ...
Xiangwei Zhu   +4 more
core   +1 more source

An Introduction to NLOS Identification and Localization

open access: yes, 2011
This chapter reviews many non-line-of-sight (NLOS) identification and localization techniques. NLOS identification techniques can be categorized into cooperative and noncooperative.
Zhonghai Wang   +5 more
core   +1 more source

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

A fusion positioning method for underground personnel based on UWB and PDR

open access: yesGong-kuang zidonghua
Most 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

UWB Positioning Algorithm Based on Fuzzy Inference and Adaptive Anti-NLOS Kalman Filtering

open access: yesApplied 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

Elliptical lagrange-based NLOS tracking localization scheme

open access: yes, 2016
This paper presents a novel tracking localization scheme that requires only a single dominant non-line-of-sight (NLOS) path and its corresponding scattering point.
Seow, C.K., Tan, S.Y., Chen, S.W.
core   +1 more source

RSS Localization Algorithm Based on Nonline of Sight Identification for Wireless Sensor Network

open access: yesInternational Journal of Distributed Sensor Networks, 2014
Localization is a key issue for wireless sensor network. The traditional localization methods achieve high location accuracy using received signal strength (RSS) in line of sight (LOS) environment.
Yan Wang   +4 more
doaj   +1 more source

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