Results 101 to 110 of about 17,373 (186)

Precise Reconstruction Method for Hidden Targets Based on Non-line-of-sight Radar 3D Imaging

Leida xuebao
Non-Line-Of-Sight (NLOS) 3D imaging radar is an emerging technology that utilizes multipath scattering echoes to detect hidden targets. However, this technology faces challenges such as the separation of multipath echoes, reduction of aperture occlusion,
Xiang CAI, Shunjun WEI, Yanbo WEN, Jiangbo HU, Mou WANG, Jun SHI, Guolong CUI   +6 more
doaj   +1 more source

Mitigating NLOS error for UWB Positioning System [PDF]

[[abstract]]The Ultra-Wideband Positioning System service of wireless communication industry has become a popular issue in the recent years. This service can provide an accurate location for many useful functions.
Lo, Yu-Chiang
core  

Controlled Signal Technique in VL‐NOMA Communication Under Interference‐Controlled Environment With Intelligent Reflecting Surfaces

Engineering Reports
This paper proposes a controlled signal technique for visible light non‐orthogonal multiple access (VL‐NOMA) communication in an interference‐controlled environment with intelligent reflecting surfaces (IRS) for beyond 5G (B5G) and 6G communication ...
C. E. Ngene, Prabhat Thakur, Ghanshyam Singh   +2 more
doaj   +1 more source

Ultra-Wideband Ranging Error Mitigation with Novel Channel Impulse Response Feature Parameters and Two-Step Non-Line-of-Sight Identification

Sensors
The effective identification and mitigation of non-line-of-sight (NLOS) ranging errors are essential for achieving high-precision positioning and navigation with ultra-wideband (UWB) technology in harsh indoor environments.
Hongchao Yang, Yunjia Wang, Shenglei Xu, Jingxue Bi, Haonan Jia, Cheekiat Seow   +5 more
doaj   +1 more source

Robust Positioning in the Presence of Multipath and NLOS GNSS Signals [PDF]

GNSS signals can be blocked and reflected by nearby objects, such as buildings, walls, and vehicles. They can also be reflected by the ground and by water.
Ashman, Benjamin W., Groves, Paul D., McGraw, Gary A.   +2 more
core   +1 more source

Accurate Multiclass NLOS Channels Identification in UWB Indoor Positioning System-Based Deep Neural Network

IEEE Access
The accurate distinction between line-of-sight (LOS) and non-line-of-sight (NLOS) propagation channels is paramount for precise distance measurement within ultra-wideband (UWB) indoor localization systems.
Ammar Fahem Majeed, Rashidah Arsat, Muhammad Ariff Baharudin, Nurul Mu'Azzah Abdul Latiff, Abbas Albaidhani   +4 more
doaj   +1 more source

Employment and command and control for the Non-Line-of-Sight (NLOS) missile system

, 1990
The author describes the employment and command and control of the Non-Line-of-Sight (NLOS) missile system. A history of the system portrays NLOS as a weapon system still in the early stages of development. A detailed description depicts NLOS as an application of fiber optic technology enabling the engagement of helicopters and ground targets beyond ...
openaire   +1 more source

Secure beamforming schemes in artificial noise-based MISO visible light communications

Tongxin xuebao
To improve the performance of physical-layer security, secure beamforming schemes were designed for artificial noise (AN)-aided multiple-input single-output visible light communication (VLC) systems.
WANG Jinyuan, YU Yinchang, LIN Shenghong, YAN Xinrun, LI Yuanyuan, LI Zheng, LIU Xiaoyu, LIN Min   +7 more
doaj  

Adaptive Kalman Filter-Based UWB Location Tracking with Optimized DS-TWR in Workshop Non-Line-of-Sight Environments. [PDF]

Sensors (Basel)
Wu J, Xiong Y, Li W, Xia W.
europepmc   +1 more source

On the Application of a Sparse Data Observers (SDOs) Outlier Detection Algorithm to Mitigate Poisoning Attacks in UltraWideBand (UWB) Line-of-Sight (LOS)/Non-Line-of-Sight (NLOS) Classification

Future Internet
The classification of the wireless propagation channel between Line-of-Sight (LOS) or Non-Line-of-Sight (NLOS) is useful in the operation of wireless communication systems. The research community has increasingly investigated the application of machine learning (ML) to LOS/NLOS classification and this paper is part of this trend, but not all the ...
openaire   +2 more sources