Results 51 to 60 of about 11,066 (147)

P-NLOS: A Prompt-Based Method for Robust NLOS Imaging

The field of non-line-of-sight (NLOS) imaging is experiencing rapid advancement, offering the potential to reveal hidden scenes that are otherwise obscured from direct view.
Su, Xiongfei, Zhang, Yuanlong, Zhu, Tianyi, Liu, Lina   +3 more
core   +1 more source

Efficient Distributed Method for NLOS Cooperative Localization in WSNs

, 2019
The accuracy of cooperative localization can be severely degraded in non-line-of-sight (NLOS) environments. Although most existing approaches modify models to alleviate NLOS impact, computational speed does not satisfy practical applications.
Jianyun Zhang, Yunxiang Mao, Shiwa Chen, Chengcheng Xu, Yu Gu   +4 more
core   +1 more source

NLOS Mitigation in Sparse Anchor Environments with the Misclosure Check Algorithm

Remote Sensing, 2019
The presence of None-line-of-sight (NLOS) is one of the major challenging issues in time of arrival (TOA) based source localization, especially for the sparse anchor scenarios.
Lei Wang, Ruizhi Chen, Lili Shen, Haiyang Qiu, Ming Li, Peng Zhang, Yuanjin Pan   +6 more
doaj   +1 more source

Passive Non-Line-of-Sight Imaging Based on Diffuse Reflection [PDF]

Jisuanji gongcheng
Non-Line-of-Sight (NLOS) imaging, which combines imaging and computational reconstruction, describes the reconstruction of hidden scenes in a medium by capturing scattered or reflected information without directly imaging the scene. NLOS imaging is still
WU Cuicui, WANG Weidong
doaj   +1 more source

Target tracking in mixed LOS/NLOS environments

, 2014
In this thesis, we discuss the problem of tracking the geographic position of a moving target in mixed line-of-sight and non-line-of-sight (LOS/NLOS) environments using measurements including time-of-arrival (TOA), angle-of-arrival (AOA) and time ...
Yi, Lili
core   +1 more source

NLOS identification and error mitigation algorithms for indoor positioning: a review

Complex & Intelligent Systems
Non-line-of-sight (NLOS) propagation of radio signals can significantly impair the performance of wireless positioning systems in indoor environments.
Suying Jiang, Ruibiao Zhang, Jing Xue, Hui Gao   +3 more
doaj   +1 more source

RM-CSTV: An effective high-resolution method of non-line-of-sight millimeter-wave radar 3-D imaging

National Science Open
Non-line-of-sight (NLOS) imaging is a novel radar sensing technology that enables the reconstruction of hidden targets. However, it may suffer from synthetic aperture length reduction caused by ambient occlusion. In this study, a complex total variation (
Liu Xinyuan, Wei Shunjun, Pu Wei, Cai Xiang, Wen Yanbo, Guo Shisheng, Kong Lingjiang   +6 more
doaj   +1 more source

A new location algorithm for mitigating NLOS in urban environment [PDF]

, 2008
由于非视距传播的影响,在蜂窝无线定位系统中存在许多误差.为了将定位估计误差减到最小,提出了城市环境下减轻NLOS影响的一种新的定位算法.该算法基于城区建筑物以块形规则排列,通过对NLOS问题进行优化,将NLOS误差减到最小,以提高定位精度.与其他算法相比,提出的算法适应只有3个NLOS基站的条件,更符合实际情况.对不同城市方案的仿真结果表明,所提出算法有更好的定位精度.Cellular- based wireless location systems usually generate big ...
程恩, 肖卫初, 陈伟宏, 李梦醒
core  

Multipath-Assisted Ultra-Wideband Vehicle Localization in Underground Parking Environment Using Ray-Tracing

Sensors
In complex underground parking scenarios, non-line-of-sight (NLOS) obstructions significantly impede positioning signals, presenting substantial challenges for accurate vehicle localization.
Shuo Hu, Lixin Guo, Zhongyu Liu, Shuaishuai Gao   +3 more
doaj   +1 more source

A Post-Processing Multipath/NLoS Bias Estimation Method Based on DBSCAN

Sensors
Positioning based on Global Navigation Satellite Systems (GNSSs) in urban environments always suffers from multipath and Non-Line-of-Sight (NLoS) effects. In such conditions, the GNSS pseudorange measurements can be affected by biases disrupting the GNSS-
Yihan Guo, Simone Zocca, Paolo Dabove, Fabio Dovis   +3 more
doaj   +1 more source