scholarly journals Three-Dimensional Millimetre Wave Beam Tracking Based on Handset MEMS Sensors with Extended Kalman Filtering

2016 ◽  
Author(s):  
Zichen Qi Zichen Qi ◽  
Wei Liu Wei Liu
Keyword(s):  
Kalman Filtering ◽  
Wave Beam ◽  
Three Dimensional ◽  
Extended Kalman Filtering ◽  
Mems Sensors ◽  
Millimetre Wave ◽  
Beam Tracking

scholarly journals Performance Enhancement of Pharmacokinetic Diffuse Fluorescence Tomography by Use of Adaptive Extended Kalman Filtering

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Xin Wang ◽  
Linhui Wu ◽  
Xi Yi ◽  
Yanqi Zhang ◽  
Limin Zhang ◽  
...  
Keyword(s):  
Kalman Filtering ◽  
Performance Enhancement ◽  
Three Dimensional ◽  
Circular Domain ◽  
Current Data ◽  
Noise Robustness ◽  
Extended Kalman Filtering ◽  
Fluorescence Tomography ◽  
Universal Applicability ◽  
Diffuse Fluorescence Tomography

Due to both the physiological and morphological differences in the vascularization between healthy and diseased tissues, pharmacokinetic diffuse fluorescence tomography (DFT) can provide contrast-enhanced and comprehensive information for tumor diagnosis and staging. In this regime, the extended Kalman filtering (EKF) based method shows numerous advantages including accurate modeling, online estimation of multiparameters, and universal applicability to any optical fluorophore. Nevertheless the performance of the conventional EKF highly hinges on the exact and inaccessible prior knowledge about the initial values. To address the above issues, an adaptive-EKF scheme is proposed based on a two-compartmental model for the enhancement, which utilizes a variable forgetting-factor to compensate the inaccuracy of the initial states and emphasize the effect of the current data. It is demonstrated using two-dimensional simulative investigations on a circular domain that the proposed adaptive-EKF can obtain preferable estimation of the pharmacokinetic-rates to the conventional-EKF and the enhanced-EKF in terms of quantitativeness, noise robustness, and initialization independence. Further three-dimensional numerical experiments on a digital mouse model validate the efficacy of the method as applied in realistic biological systems.

scholarly journals Circularly‐polarised end‐fire antenna and arrays for 5G millimetre‐wave beam‐steering systems

2020 ◽  
Vol 14 (9) ◽  
pp. 980-987 ◽  
Author(s):  
Khaled Al‐Amoodi ◽  
Mohammad Mahdi Honari ◽  
Rashid Mirzavand ◽  
Jordan Melzer ◽  
Duncan G. Elliott ◽  
...  
Keyword(s):  
Wave Beam ◽  
Beam Steering ◽  
Millimetre Wave
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