Preface |
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xv | |
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xix | |
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1 Ultra-Wideband Sensing - An Overview |
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1 | (30) |
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1.2 Ultra-Wideband - Definition and Consequences of a Large Bandwidth |
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7 | (9) |
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1.2.1 Basic Potentials of Ultra-Wideband Remote Sensing |
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9 | (1) |
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1.2.2 Radiation Regulation |
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10 | (4) |
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1.2.2.1 Implication of UWB Radiation on Biological Tissue |
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14 | (2) |
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1.3 A Brief History of UWB Technique |
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16 | (1) |
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1.4 Information Gathering by UWB Sensors |
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17 | (14) |
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27 | (4) |
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2 Basic Concepts on Signal and System Theory |
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31 | (168) |
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31 | (1) |
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2.2 UWB Signals, Their Descriptions and Parameters |
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32 | (39) |
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2.2.1 Classification of Signals |
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32 | (1) |
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2.2.1.1 Types of Stimulus Signals |
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32 | (1) |
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33 | (1) |
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2.2.1.3 Analogue and Digital Signals |
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34 | (1) |
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2.2.2 Signal Description and Parameters of Compact Signals in the Time domain |
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35 | (1) |
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2.2.2.1 Basic Shape Parameters |
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35 | (3) |
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38 | (2) |
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40 | (1) |
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41 | (1) |
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2.2.2.5 Integral Values of Pulse Duration |
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42 | (1) |
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2.2.3 Statistical Signal Descriptions |
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43 | (1) |
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2.2.3.1 Probability Density Function and Its Moments |
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43 | (1) |
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2.2.3.2 Individual Signal |
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44 | (1) |
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45 | (4) |
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2.2.4 Signal Description of Continuous Wave (CW) UWB Signals |
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49 | (1) |
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2.2.4.1 Auto-Correlation Function |
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50 | (2) |
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2.2.4.2 Cross-Correlation Function |
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52 | (2) |
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2.2.5 Frequency Domain Description |
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54 | (1) |
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2.2.5.1 The Fourier Series and Fourier Transformation |
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55 | (4) |
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2.2.5.2 Some Properties and Parameters of a Spectrum |
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59 | (2) |
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2.2.5.3 Time-Bandwidth Products |
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61 | (4) |
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2.2.6 Doppler Scaling and Ambiguity Function |
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65 | (6) |
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2.3 Some Idealized UWB Signals |
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71 | (23) |
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2.3.1 Rectangular Unipolar and Bipolar Pulse Trains |
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72 | (1) |
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2.3.2 Single Triangular Pulse |
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72 | (1) |
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73 | (2) |
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75 | (4) |
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2.3.5 Binary Pseudo-Noise Codes |
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79 | (7) |
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86 | (2) |
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88 | (3) |
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91 | (3) |
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2.4 Formal Description of Dynamic Systems |
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94 | (38) |
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94 | (2) |
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2.4.2 Time Domain Description |
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96 | (1) |
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96 | (1) |
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2.4.2.2 The Impulse Response Function or the Time Domain Green's Function |
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97 | (6) |
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2.4.2.3 Extraction of Information from the Impulse Response Function |
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103 | (4) |
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2.4.3 The Frequency Response Function or the Frequency Domain Greens Function |
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107 | (2) |
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2.4.3.1 Properties of the Frequency Response Function and the Utility of the Frequency Domain |
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109 | (2) |
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2.4.3.2 Parameters of the Frequency Response Function |
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111 | (1) |
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2.4.4 Parametric System Descriptions |
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112 | (1) |
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2.4.4.1 Differential Equation |
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112 | (2) |
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2.4.4.2 The Laplace Transform |
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114 | (1) |
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2.4.4.3 Transfer Function |
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115 | (3) |
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2.4.4.4 State Space Model |
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118 | (6) |
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2.4.5 Time Discrete Signal and Systems |
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124 | (1) |
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2.4.5.1 Discrete Fourier Transform |
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125 | (1) |
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2.4.5.2 Circular Correlation and Convolution |
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126 | (1) |
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2.4.5.3 Data Record Length and Sampling Interval |
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127 | (5) |
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132 | (14) |
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2.5.1 Energetic Interaction and Waves |
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132 | (3) |
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2.5.2 N-Port Description by IV-Parameters |
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135 | (3) |
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2.5.3 N-Port Description by Wave Parameters |
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138 | (4) |
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2.5.4 Determination of N-Port Parameters |
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142 | (4) |
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2.6 Measurement Perturbations |
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146 | (49) |
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2.6.1 Additive Random Noise and Signal-to-Noise Ratio |
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146 | (2) |
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2.6.1.1 Signal-to-Noise Ratio (SNR) |
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148 | (1) |
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149 | (2) |
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2.6.1.3 Synchronous Averaging |
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151 | (1) |
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2.6.1.4 Matched Filter/Correlator |
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152 | (5) |
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2.6.1.5 Device Internal Noise |
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157 | (1) |
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2.6.1.6 Quantization Noise |
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158 | (8) |
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2.6.1.7 IRF and FRF Estimation from Noisy Data |
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166 | (2) |
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2.6.2 Narrowband Interference |
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168 | (2) |
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2.6.3 Jitter and Phase Noise |
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170 | (1) |
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170 | (3) |
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173 | (2) |
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175 | (2) |
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2.6.3.4 Oscillator Stability |
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177 | (1) |
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2.6.4 Linear Systematic Errors and their Correction |
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178 | (11) |
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2.6.5 Non-Linear Distortions |
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189 | (2) |
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191 | (4) |
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195 | (4) |
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195 | (4) |
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3 Principle of Ultra-Wideband Sensor Electronics |
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199 | (164) |
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199 | (2) |
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3.2 Determination of the System Behaviour by Pulse Excitation |
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201 | (42) |
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201 | (2) |
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203 | (1) |
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3.2.2.1 Monolithically Integrated Pulse Sources |
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203 | (1) |
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204 | (1) |
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3.2.2.3 Avalanche Transistor |
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204 | (2) |
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3.2.2.4 Step Recovery Diode (Snap-Off Diode) |
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206 | (1) |
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3.2.2.5 Non-Linear Transmission Line |
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206 | (1) |
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3.2.3 Voltage Capturing by Sub-Sampling (Stroboscopic Sampling) |
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207 | (1) |
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3.2.3.1 Preliminary Remarks |
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207 | (1) |
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3.2.3.2 Principles of Voltage Sampling |
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208 | (15) |
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3.2.3.3 Timing of Data Capturing by Sub-Sampling |
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223 | (13) |
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3.2.4 Voltage Capturing by 1 bit Conversion |
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236 | (4) |
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3.2.5 Peculiarities of Sensors with Pulse Excitation |
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240 | (3) |
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3.3 Determination of the System Behaviour by Excitation with Pseudo-Noise Codes |
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243 | (53) |
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3.3.1 Generation of Very Wideband PN-Codes |
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243 | (4) |
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3.3.2 IRF Measurement by Wideband Correlation |
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247 | (1) |
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3.3.3 The Sliding Correlator |
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248 | (3) |
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3.3.4 Basic Concept of Digital Ultra-Wideband PN-Correlation |
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251 | (4) |
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3.3.4.1 Digital Impulse Compression |
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255 | (2) |
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3.3.4.2 Transformation into the Frequency Domain |
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257 | (1) |
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3.3.4.3 Removal of Stationary Data |
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258 | (4) |
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3.3.5 Some Particularities of PN-Sequence Devices |
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262 | (4) |
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3.3.6 System Extensions of Digital PN-Correlator |
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266 | (1) |
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3.3.6.1 Improving the Sampling Efficiency |
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266 | (9) |
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3.3.6.2 MiMo-Measurement System |
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275 | (3) |
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3.3.6.3 Up-Down-Conversion |
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278 | (5) |
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3.3.6.4 Equivalent Time Oversampling |
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283 | (4) |
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3.3.6.5 Beam Steering and Doppler Bank |
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287 | (6) |
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3.3.6.6 Transmitter-Receiver Separation |
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293 | (3) |
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3.4 Determination of the System Behaviour by Excitation with Sine Waves |
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296 | (27) |
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296 | (1) |
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3.4.2 Measurement of the Frequency Response Functions |
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297 | (1) |
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3.4.2.1 Homodyne Receiver |
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297 | (2) |
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3.4.2.2 Heterodyne Receiver |
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299 | (3) |
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3.4.3 Sine Wave Sources of Variable Frequency |
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302 | (4) |
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306 | (1) |
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3.4.4.1 Stepped Frequency Continuous Wave (SFCW) |
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306 | (11) |
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3.4.4.2 Continuous Frequency Variation |
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317 | (6) |
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3.5 The Multi-Sine Technique |
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323 | (7) |
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3.6 Determination of the System Behaviour with Random Noise Excitation |
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330 | (11) |
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3.6.1 Time Domain Approaches |
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334 | (4) |
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3.6.2 Frequency Domain Approaches |
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338 | (3) |
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3.7 Measuring Arrangements |
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341 | (13) |
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3.7.1 Capturing of Voltage and Current |
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341 | (2) |
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3.7.2 Basic Measurement Circuit |
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343 | (4) |
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3.7.3 Methods of Wave Separation |
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347 | (1) |
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3.7.3.1 Wave Separation by Time Isolation |
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347 | (4) |
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3.7.3.2 Wave Separation by Directional Couplers |
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351 | (1) |
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3.7.3.3 Wave Separation by Voltage Superposition |
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351 | (2) |
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3.7.3.4 Capturing of E- and H-Field |
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353 | (1) |
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354 | (9) |
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356 | (7) |
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363 | (222) |
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363 | (1) |
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4.2 Distributed System - the Measurement Problem |
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363 | (5) |
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4.3 Plane Wave and Isotropic Waves/Normalized Wave |
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368 | (11) |
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4.4 Time Domain Characterization of Antennas and the Free Space Friis Transmission Formula |
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379 | (9) |
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379 | (3) |
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4.4.2 Antenna as Transmitter |
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382 | (2) |
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4.4.3 Antenna as Receiver |
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384 | (1) |
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4.4.4 Transmission Between Two Antennas - The Scalar Friis Transmission Formula |
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385 | (3) |
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4.5 Indirect Transmission Between Two Antennas The Scalar Time Domain Radar Equation |
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388 | (17) |
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4.5.1 Wave Scattering at Planar Interfaces |
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388 | (3) |
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4.5.2 Wave Scattering at Small Bodies |
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391 | (14) |
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4.6 General Properties of Ultra-Wideband Antennas |
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405 | (41) |
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4.6.1 Canonical Minimum-Scattering Antenna |
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409 | (3) |
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4.6.2 Spectral Domain Antenna Parameters |
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412 | (5) |
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4.6.3 Time Domain Antenna Parameters |
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417 | (3) |
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4.6.3.1 Effective Centre of Radiation |
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420 | (4) |
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4.6.3.2 Boresight Direction and Canonical Position |
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424 | (1) |
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4.6.3.3 Time Domain Directive Gain Pattern |
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425 | (1) |
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4.6.3.4 Spherical Deformation Pattern |
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425 | (1) |
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4.6.3.5 Fidelity and Fidelity Pattern |
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425 | (1) |
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4.6.3.6 Structural Efficiency Pattern |
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426 | (1) |
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4.6.4 Parametric Description of Antenna and Scatterer |
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427 | (3) |
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4.6.5 Distance and Angular Dependence of Antenna Functions and Parameters |
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430 | (5) |
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4.6.6 The Ideal Short-Range UWB Radar Equation |
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435 | (5) |
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4.6.7 Short-Range Time Domain Antenna Measurements |
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440 | (1) |
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4.6.7.1 Transmission Measurement Between Two Antennas |
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440 | (3) |
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4.6.7.2 Direct Measurement of Antenna Impulse Response |
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443 | (2) |
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4.6.7.3 Impulse Response Measurement by Backscattering |
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445 | (1) |
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4.6.7.4 Measurement of Antenna Backscattering |
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446 | (1) |
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4.7 Basic Performance Figures of UWB Radar |
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446 | (41) |
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4.7.1 Review on Narrowband Radar Key Figures and Basics on Target Detection |
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446 | (9) |
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4.7.2 Range Resolution of UWB Sensors |
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455 | (4) |
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4.7.3 Accuracy of Range Measurement |
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459 | (1) |
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4.7.3.1 Statement of the Problem |
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459 | (4) |
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4.7.3.2 Noise- and Jitter-Affected Ultra-Wideband Signals |
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463 | (5) |
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4.7.3.3 Noise and Jitter Robustness of Various UWB Sensor Concepts |
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468 | (1) |
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4.7.3.4 Short-Pulse Excitation and Dual Ramp Sampling Control |
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469 | (1) |
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4.7.3.5 Analogue Short-Pulse Correlation and Dual Sine Timing |
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470 | (1) |
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4.7.3.6 Ultra-Wideband CW Stimulation and Dual Pulse Timing |
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471 | (2) |
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4.7.3.7 Random Uncertainty of Time Position Estimation |
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473 | (10) |
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4.7.3.8 Time Position Error Caused by Drift and Its Correction |
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483 | (4) |
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487 | (32) |
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4.8.1 Preliminary Remarks |
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487 | (2) |
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4.8.2 Target Detection Under Noisy Conditions |
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489 | (1) |
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4.8.2.1 Detections Based on a Single Measurement |
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490 | (6) |
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4.8.2.2 Detection Based on Repeated Measurements |
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496 | (11) |
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4.8.3 Detection of Weak Targets Closely Behind an Interface |
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507 | (2) |
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4.8.3.1 Modelling of the Receiving Signal |
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509 | (1) |
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4.8.3.2 Hidden Target Detection |
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510 | (2) |
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4.8.3.3 Blind Range Reduction |
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512 | (7) |
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4.9 Evaluation of Stratified Media by Ultra Wideband Radar |
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519 | (11) |
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4.9.1 Measurement arrangement and Modelling of Wave Propagation |
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519 | (7) |
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4.9.2 Reconstruction of Coplanar Layer Structure |
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526 | (4) |
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4.10 Ultra-Wideband Short-Range Imaging |
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530 | (55) |
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530 | (1) |
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4.10.2 The Basic Method of Short-Range Imaging |
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531 | (4) |
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4.10.3 Array-Based Imaging |
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535 | (3) |
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4.10.3.1 Ultra-Wideband Radar Array |
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538 | (1) |
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4.10.3.2 Point Spread Function and Image Resolution |
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539 | (5) |
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4.10.3.3 Steering Vector Design |
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544 | (8) |
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4.10.3.4 Sparse Scene Imaging |
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552 | (10) |
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4.10.3.5 Array Configurations and Remarks on UWB Radar Imaging |
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562 | (3) |
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4.10.4 Shape Reconstruction by Inverse Boundary Scattering |
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565 | (1) |
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4.10.4.1 Shape Reconstruction by Quasi-Wavefront Derivation |
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565 | (3) |
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4.10.4.2 Shape Reconstruction Based on Tangent Planes |
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568 | (1) |
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4.10.4.3 Planar Interface Localization by Mono-Static Measurements |
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568 | (4) |
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4.10.4.4 Bi-Static Measurement |
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572 | (5) |
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4.10.4.5 Estimation of Reconstruction Errors |
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577 | (1) |
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578 | (7) |
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5 Electromagnetic Fields and Waves in Time and Frequency |
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585 | (66) |
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585 | (1) |
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5.2 The Fundamental Relations of the Electromagnetic Field |
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586 | (10) |
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5.2.1 Maxwell's Equations and Related Relations |
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587 | (5) |
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5.2.2 Boundary Conditions |
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592 | (1) |
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5.2.3 Energy Flux of Electromagnetic Radiation |
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593 | (1) |
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5.2.4 Radiation Condition |
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594 | (1) |
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5.2.5 Lorentz Reciprocity |
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594 | (2) |
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5.3 Interaction of Electromagnetic Fields with Matter |
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596 | (5) |
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5.4 Plane Wave Propagation |
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601 | (16) |
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5.4.1 The Electromagnetic Potentials |
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602 | (2) |
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5.4.2 Time Harmonic Plane Wave |
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604 | (2) |
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5.4.3 fp-Space Description and Dispersion Relation |
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606 | (2) |
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5.4.4 Propagation in Arbitrary Direction |
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608 | (3) |
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5.4.5 Time Domain Description of Wideband Plane Wave |
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611 | (3) |
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5.4.6 Scattering of a Plane Wave at a Planar Interface |
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614 | (3) |
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617 | (14) |
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5.5.1 The Dipole as Transmitter |
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618 | (4) |
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5.5.2 Far-Field and Normalized Dipole Wave |
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622 | (2) |
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5.5.3 The Dipole as Field Sensor and Self-Reciprocity |
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624 | (1) |
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625 | (6) |
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5.6 Polarimetric Friis Formula and Radar Equation |
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631 | (5) |
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5.7 The Concept of Green's Functions and the Near-Field Radar Equation |
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636 | (15) |
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647 | (4) |
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6 Examples and Applications |
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651 | (150) |
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6.1 Ultra-Wideband Sensing - The Road to New Radar and Sensor Applications |
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651 | (12) |
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6.1.1 Potential of Ultra-Wideband Sensing - A Short Summary |
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651 | (3) |
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6.1.2 Overview on Sensor Principles |
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654 | (1) |
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6.1.3 Application of Ultra-Wideband Sensing |
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655 | (8) |
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6.2 Monolithically Integration of M-Sequence-Based Sensor Head |
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663 | (25) |
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663 | (1) |
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6.2.2 Technology and Design Issues |
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663 | (1) |
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6.2.2.1 Sensor IC Technology Choice |
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663 | (3) |
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666 | (1) |
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6.2.2.3 Architecture-Specific Circuit Definitions |
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667 | (1) |
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6.2.2.4 Technology Figure-of-Merits |
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667 | (1) |
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6.2.3 Multi-Chip and Single-Chip Sensor Integration |
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668 | (4) |
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6.2.4 The UWB Single-Chip Head |
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672 | (1) |
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6.2.4.1 Architecture and Design Philosophy |
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672 | (2) |
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6.2.4.2 Implemented Circuit Topology |
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674 | (2) |
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6.2.4.3 Single-Chip Floor Plan |
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676 | (2) |
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6.2.5 Particular Single-Chip Blocks |
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678 | (1) |
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6.2.5.1 Stimulus Generator |
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678 | (1) |
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6.2.5.2 The Synchronization Unit |
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679 | (1) |
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6.2.5.3 Transmitter I/O Buffers |
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680 | (1) |
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6.2.5.4 Ultra-Wideband Receivers |
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681 | (4) |
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6.2.6 Single-Chip Test Prototypes |
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685 | (3) |
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6.3 Dielectric UWB Microwave Spectroscopy |
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688 | (12) |
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688 | (2) |
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6.3.2 Time Domain Reflectometer for Dielectric Spectroscopy |
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690 | (1) |
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690 | (1) |
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6.3.2.2 Instrument Requirements |
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690 | (1) |
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6.3.2.3 Sequential Sampling |
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691 | (1) |
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692 | (1) |
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693 | (1) |
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693 | (1) |
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6.3.3.1 Principal Component Analysis and Regression |
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694 | (3) |
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6.3.3.2 Artificial Neural Networks |
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697 | (1) |
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698 | (2) |
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6.4 Non-Destructive Testing in Civil Engineering Using M-Sequence-Based UWB Sensors |
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700 | (14) |
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6.4.1 Assessment of Sewer Pipe Embedding |
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701 | (1) |
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6.4.1.1 Pipe Inspection Sensor |
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702 | (1) |
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6.4.1.2 Test Bed and Data Processing |
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|
702 | (2) |
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6.4.1.3 Measurement Example for the Bedding of a Plastic Pipe |
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|
704 | (2) |
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6.4.2 Inspection of the Disaggregation Zone in Salt Mines |
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|
706 | (1) |
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6.4.2.1 M-Sequence UWB Sensor for Detection of Salt Rock Disaggregation |
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|
707 | (1) |
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6.4.2.2 Data Processing for Detection of Disaggregation |
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|
707 | (2) |
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6.4.2.3 Example Measurement: A 3D View of Salt Rock Disaggregation in an Old Tunnel |
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|
709 | (3) |
|
6.4.2.4 Example Measurement: Subsidence Analysis in a Fresh Tunnel Stub |
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|
712 | (2) |
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|
714 | (1) |
|
6.5 UWB Cardiovascular Monitoring for Enhanced Magnetic Resonance Imaging |
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|
714 | (12) |
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|
|
|
Francesco Scotto di Clemente |
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|
|
|
|
714 | (2) |
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6.5.2 Impact of Cardiac Activity on Ultra-Wideband Reflection Signals from the Human Thorax |
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|
716 | (1) |
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6.5.3 Compatibility of MRI and UWB Radar |
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|
717 | (1) |
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6.5.3.1 Measurements on a Stratified Human Thorax Phantom |
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|
717 | (1) |
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6.5.3.2 Design Considerations for MR Compatible Ultra-Wideband Antennas |
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|
718 | (2) |
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6.5.4 Interpretation of Physiological Signatures from UWB Signals |
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|
720 | (1) |
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6.5.4.1 Simultaneous ECG/UWB Measurements |
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|
720 | (2) |
|
6.5.4.2 Appropriate Data Analysis and Resulting Multiple Sensor Approach |
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|
722 | (1) |
|
6.5.4.3 Physiological Interpretation |
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|
722 | (2) |
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6.5.5 MR Image Reconstruction Applying UWB Triggering |
|
|
724 | (1) |
|
6.5.6 Outlook and Further Applications |
|
|
724 | (2) |
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|
726 | (1) |
|
6.6 UWB for Medical Microwave Breast Imaging |
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|
726 | (19) |
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|
726 | (1) |
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6.6.1.1 Non-Contact Breast Imaging |
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|
727 | (1) |
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6.6.1.2 Contact-Mode Breast Imaging |
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|
728 | (1) |
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6.6.2 Breast and Body Surface Reconstruction |
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|
728 | (1) |
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|
728 | (4) |
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6.6.2.2 Detection and Elimination of Improper Wavefronts |
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|
732 | (3) |
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6.6.2.3 Exemplary Reconstruction Results and Influencing Factors |
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|
735 | (5) |
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6.6.3 Contact-Based Breast Imaging |
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|
740 | (1) |
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6.6.3.1 UWB Breast Imaging in Time Domain |
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|
740 | (1) |
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6.6.3.2 Measurement Setup Based on Small Antennas |
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|
741 | (2) |
|
6.6.3.3 Imaging Results of Phantom Trials |
|
|
743 | (1) |
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|
744 | (1) |
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6.7 M-Sequence Radar Sensor for Search and Rescue of Survivors Beneath Collapsed Buildings |
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|
745 | (17) |
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6.7.1 Principle and Challenges |
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|
746 | (2) |
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|
748 | (1) |
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6.7.3 Pre-Processing and Breathing Detection |
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|
749 | (3) |
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6.7.3.1 Breathing Enhancement by Its Periodicity |
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|
752 | (1) |
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6.7.3.2 Signal Enhancement in Propagation Time |
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|
753 | (3) |
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6.7.4 Non-Stationary Clutter Reduction |
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|
756 | (2) |
|
6.7.5 Localization of Breathing People |
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|
758 | (3) |
|
6.7.6 Conclusions and Future Work |
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|
761 | (1) |
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|
762 | (1) |
|
6.8 Multiple Moving Target Tracking by UWB Radar Sensor Network |
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|
762 | (10) |
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|
|
|
|
762 | (2) |
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|
764 | (1) |
|
6.8.3 Basic Concept of UWB Sensor Network for Short-Range Multiple Target Tracking |
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|
765 | (2) |
|
6.8.4 Experimental Results |
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|
767 | (4) |
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|
771 | (1) |
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|
772 | (29) |
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|
6.9.1 Classification of UWB Localization Approaches |
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|
772 | (1) |
|
6.9.1.1 Two-Step Localization versus Imaging |
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|
773 | (1) |
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6.9.1.2 Active versus Passive Approach |
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|
774 | (1) |
|
6.9.1.3 Time of Arrival versus Time Difference of Arrival |
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|
775 | (2) |
|
6.9.2 Active Localization |
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|
777 | (2) |
|
6.9.3 Passive Localization |
|
|
779 | (1) |
|
6.9.3.1 Detection of Targets |
|
|
779 | (1) |
|
6.9.3.2 Passive Localization of Targets |
|
|
780 | (1) |
|
|
781 | (2) |
|
|
783 | (4) |
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|
787 | (2) |
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|
789 | (12) |
Appendix |
|
801 | (2) |
Symbols and Abbreviations |
|
803 | (1) |
Symbols |
|
803 | (7) |
Notations |
|
810 | (1) |
Structure of Multi-Dimensional Data |
|
811 | (1) |
Abbreviations |
|
812 | (5) |
Index |
|
817 | |