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

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LIST OF FIGURES xiv θw – Wall angle T – Transmission coefficient, also target position T OA – Time of arrival T OAAT – Travel time between antenna and target T OAT X−T – Travel time between transmit antenna and target T OAT −RX – Travel time between target and receive antenna t – Time ∆t – Time difference between air-wall and wall-air interface tT X RX – Travel time between TX and RX tinwall – Travel time inside a wall tdelay – Time delay caused by through the wall penetration τ(k) – Time zero τ(m) – Strength of m-th target VS – Voltage at transmit antenna VR – Voltage at receive antenna v – Velocity of a wave propagation, also eigenvector vw – Velocity of a wave propagation inside a wall v0 – Constant velocity of a wave propagation vol – Volume ∂V – Surface of V W – Inflection point Wdi – Distance from antenna to the wall WH – Window function w – Weight function of antenna footprint X – Position of scatterer, also coordination X X(r, θ, ϕ, n) – Transfer function of measured environment [xT , zT ] – Coordinations of target [xtr, ztr] – Coordinations of transmitter [xre, zre] – Coordinations of receiver Z – Coordination Z Z0 – Impedance of the air Zc – Impedance of the cable
Chapter 1 Introduction 1.1 Motivation A man was interested in knowing of unknown from the very beginning of the human history. Our human eyes help us to investigate our environment by reflection of light. However, wavelengths of visible light allows transparent view through only a very small kinds of materials. On the other hand, Ultra WideBand (UWB) electromagnetic waves with frequencies of few Gigahertz are able to penetrate through almost all types of materials around us. With some sophisticated methods and a piece of luck we are able to investigate what is behind opaque walls. Rescue and security of the people is one of the most promising fields for such applications. Rescue: Imagine how useful can be information about interior of the barricaded Fig. 1.1.1: Policeman is scanning the room with terrorists and hostage. 1
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 and 12: LIST OF FIGURES xi List of Symbols
Page 13: LIST OF FIGURES xiii kx - Horizonta
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 51
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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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