Results 31 to 40 of about 80,566 (262)
An efficient 2-D MLFMM-UTD hybrid method to model non-line-of-sight propagation [PDF]
, 2015 We present a hybrid method that combines the Multilevel Fast Multipole Method (MLFMM) with the Uniform Theory of Diffraction (UTD) to model two-dimensional (2-D) scattering problems.
De Zutter, Daniël +2 more
core +1 more source
Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems [PDF]
, 2011 In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated.
Montorsi, Francesco +2 more
core +1 more source
International Journal of Distributed Sensor Networks, 2020 As the key technology for Internet of things, wireless sensor networks have received more attentions in recent years. Mobile localization is one of the significant topics in wireless sensor networks.
Nan Hu +5 more
doaj +1 more source
Multi-Modal Non-Line-of-Sight Passive Imaging
IEEE Transactions on Image Processing, 2019 We consider the non-line-of-sight (NLOS) imaging of an object using the light reflected off a diffusive wall. The wall scatters incident light such that a lens is no longer useful to form an image. Instead, we exploit the 4D spatial coherence function to reconstruct a 2D projection of the obscured object. The approach is completely passive in the sense
Andre Beckus +2 more
openaire +3 more sources
Improved Kalman filter indoor positioning algorithm based on CHAN
Tongxin xuebao, 2023 Due to the raising complexity of the indoor environment, the influence of the non-line-of-sight error is gradually increasing in indoor positioning.How to reduce the non-line-of-sight error in the indoor positioning environment is particularly ...
Rui JIANG +4 more
doaj +2 more sources
Wireless sensor indoor positioning based on an improved particle filter algorithm
International Journal of Distributed Sensor Networks, 2020 Positioning by wireless sensor network is one of its main functions and has been widely used in many fields. However, when signal propagation is hindered, serious errors, non-line-of-sight errors, occur.
Pan Feng +4 more
doaj +1 more source
Indoor wireless channel modeling from 2.4 to 24 GHz using a combined E/H-Plane 2D ray tracing method [PDF]
, 2004 Future wireless systems are moving to high frequencies for additional bandwidth and frequency reuse. This makes it very important to have accurate and time-efficient models for system planning.
Lu, Dai, Rutledge, David
core +1 more source
Towards Non-Line-of-Sight Photography
, 2021 The proposed method and dataset are required further ...
Peng, Jiayong +6 more
openaire +2 more sources
Rooftop and indoor reception with transmit diversity applied to DVB-T networks: A long term measurement campaign [PDF]
, 2009 Although transmit Delay Diversity (DD) can provide a gain in indoor and other Non Line of Sight situations (NLOS), it can introduce degradation in rooftop reception. In fact, when the Ricean K factor of the channel is significantly high (e.g.
Arrinda, A +6 more
core +1 more source
Non-line-of-Sight Imaging via Neural Transient Fields [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2021 We present a neural modeling framework for Non-Line-of-Sight (NLOS) imaging. Previous solutions have sought to explicitly recover the 3D geometry (e.g., as point clouds) or voxel density (e.g., within a pre-defined volume) of the hidden scene. In contrast, inspired by the recent Neural Radiance Field (NeRF) approach, we use a multi-layer perceptron ...
Siyuan Shen +7 more
openaire +3 more sources