Through-Wall Imaging With UWB Radar System - KEMT FEI TUKE

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LIST OF FIGURES xii εra – Relative permittivity of the air εrw – Relative permittivity of the wall E rad – Radiated electric field E meas – Measured electric field Errd – Relative error of d ErrT OA – Relative error of T OA en – Delay between two adjacent multiple reflections F F T – Fast Fourier transform F (k) – Filter for multiple echo reducing f – Frequency fc – Clock frequency footprint – Weight function of antenna look angle G(x0; x) – Greens function, x0: source point , x: observation point g p – Vector of Greens functions Γ – Reflection coefficient HF – Hough transform Hx – Distance from antenna to the target in X direction Hz – Distance from antenna to the target in Z direction h – Transfer function hA – Transfer function of a measurement system hs – Transfer function of a radar system including antennas hC – Transfer function of a clutter hT – Transfer function of a target hm – Transfer function of antenna measured against an ideal reflector hT X – Transfer function of a transmit antenna hRX – Transfer function of a receive antenna i – Artificial variable I – Number of iterations I(xT , zT ) – Migrated image IF (xT , zT ) – Migrated image transformed back from Hough space Iw(xT , zT ) – Migrated image after all compensations IwDE(xT , zT ) – Migrated image with detected edges IHT (xT , zT ) – Hough Transform of migrated image with detected edges IW HT (xT , zT ) – Hough Transform of migrated image with detected edges after filtering in Hough space IF F T – Inverse fast Fourier transform IHF – Inverse Hough transform j – Number of receive antennas, also artificial variable k – Wavenumber, also oversampled discrete time, also artificial variable
LIST OF FIGURES xiii kx – Horizontal wavenumber kz – Vertical wavenumber K – Multistatic response matrix KO – Oversampling factor λ – Eigenvalue M – Chips number of M-sequence, also number of scatterers µ – Permeability µa – Permeability of the air µw – Permeability of the wall µrw – Relative permeability of the wall N – Number of antennas positions Nx – Resolution of migrated image in X direction Nz – Resolution of migrated image in Z direction n – Discrete time, also artificial variable, also number of transmit antennas �n – Outward pointing normal to the surface noise – Noise −→ ∇ – Divergence ∇ 2 – Laplacian OSAR – Computational complexity of SAR imaging OKir – Computational complexity of Kirchhoff migration OSto – Computational complexity of Stolt migration ω – Angular frequency P – Position of point-like target φ – Scalar wavefield in frequency domain, also angle of wave φ0 – Scalar potential at z = 0 ψ – Scalar wavefield in time domain R – Position of antenna center r, θ, ϕ – Spatial coordinates r – Distance from the origin to the line along a vector perpendicular to the line σ – Conductivity σw – Conductivity of the wall S(X, Z) – Measured space with coordinates X and Z Spline – Spline function S0 – Surface at plane Z = 0 Sz – Surface below the reflector S∞ – Surface at vertical cylindrical walls surf – Surface θ – vertical angle between the receiver and ray to the scatterpoint, also angle of the vector perpendicular to the line
Page 1 and 2: TECHNICAL UNIVERSITY OF KOˇSICE Fa
Page 3 and 4: Acknowledgement I give a sincere gr
Page 5 and 6: CONTENTS v 3 Goals of Dissertation
Page 7 and 8: LIST OF FIGURES vii List of Figures
Page 9 and 10: LIST OF FIGURES ix 4.4.3 Aquarium f
Page 11: LIST OF FIGURES xi List of Symbols
Page 15 and 16: Chapter 1 Introduction 1.1 Motivati
Page 17 and 18: 1.3 Thesis Organization 3 In additi
Page 19 and 20: Chapter 2 State Of The Art 2.1 UWB
Page 21 and 22: 2.2 Through-Wall Radar Basic Model
Page 23 and 24: 2.3 SAR Scanning 9 and shall remain
Page 25 and 26: 2.4 Calibration and Preprocessing 1
Page 27 and 28: 2.4 Calibration and Preprocessing 1
Page 29 and 30: 2.5 Radar Imaging Methods Overview
Page 55 and 56: Chapter 4 Selected Research Methods
Page 57 and 58: 4.1 Through-Wall TOA Estimation 43
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4.1 Through-Wall TOA Estimation 49
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4.2 Measurements of the Wall Parame
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4.3 Highlighting of a Building Cont
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4.4 Measurements of the Practical S
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5.1 Conclusion and Future Work 85 5
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50 100 150 200 250 300 350 400 Z 45
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50 100 150 200 250 300 350 400 Z 45
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50 100 150 200 250 300 350 400 Z 45
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50 100 150 200 250 300 350 400 Z 45
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Z [cm] Z [cm] 50 100 150 200 250 30
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Z [cm] 50 100 150 200 250 300 b) Em
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BIBLIOGRAPHY 99 [13] T. W. Barrett,
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BIBLIOGRAPHY 101 [46] G. Derveaux,
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BIBLIOGRAPHY 103 [81] S. Kidera, T.
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BIBLIOGRAPHY 105 [115] J. Sachs, M.
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BIBLIOGRAPHY 107 [150] O. Yilmaz, S
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Through-Wall Imaging With UWB Radar System - KEMT FEI TUKE

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