Calibration of a Terrestrial Laser Scanner - Institute of Geodesy and ...

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VIZusammenfassungserscanning aufgenommen.Basierend auf diesen Daten wurden Strukturen verschiedener Gesteinsschich¬ten sowie Deformationen des Tunnels flachenhaft und in diskreten Punkten abgeleitet.beiden Beispiele statische Applikationen darstellen, d.h.Wahrend die erstender Laserscanner wurde wahrend der Datener¬fassung nicht bewegt, stellt das dritte Beispiel eine kinematische Anwendung dar, d.h.der Laserscannerwurde wahrend der Datenerfassung bewegt. Solche kinematischen Anwendungen sind von großem Inter¬esse, da die Arbeitsleistung betrachtlich gesteigert werden kann. Speziellfur Tunnels und Straßen ist kine¬matisches Laserscanning geeignet. Das Potential fur kinematische Anwendungen wurde getestet, indemder Laserscanner auf einer Messbahn entlang bewegt wurde. Die Qualität wurde mittels Referenzpunktenbeurteilt.
ContentsAbstractiiiZusammenfassungv1 Introduction 11.1 Terrestrial Laser Scanning 11.2 Motivation 31.3 Outline 42 Componentsof Terrestrial Laser Scanner 72.1 Distance and Reflectance Measurement System 72.1.1 Electromagnetic Waves 82.1.2 Laser 92.1.3 Direct Time-of-Flight 132.1.4 Amplitude-Modulated Continuous Wave (AMCW) 132.1.5 Frequency-Modulated Continuous Wave (FMCW) 152.1.6 Overview of Distance Measurement Techniques in Terrestrial Laser Scanners 162.1.7 Avalanche Photo Diode (APD) 162.1.8 Reflection Principles 172.1.9 Reflectance Models 172.2 Angle Measurement System 182.2.1 Incremental Encoding 192.2.2 Binary Encoding 202.3 Deflection System 202.3.1 Oscillating2.3.2 RotatingMirror 21Mirror 222.3.3 Overview of Deflection Techniques in Terrestrial Laser Scanners 223 Calibration of Terrestrial Laser Scanner 233.1 Laboratories and Tools for Calibration 263.1.1 Calibration Track Line 263.1.2 Test Field of Control Points 273.1.3 Test Field of Observation Pillars 283.1.4 Electronic Unit for FrequencyMeasurement 283.1.5 Calibration of Spheres 293.2 Distance Measurement System 313.2.1 Static Mode 323.2.2 ScanningMode 353.2.3 Long-Term Stability 393.2.4 Frequency Stability 403.3 Angle Measurement System 423.3.1 Horizontal Encoder 443.3.2 Vertical Encoder 45
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112 6. Applications of Terrestrial
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acquisitiondescribingFinally, thatM
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132 7. Summaryrange, achievable by
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134 7. Summary
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136 A. Imaging System of Imager 500
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138 B. Technical Data of Imager 500
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u140 C. Adjustment of SphereA =dfi,
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142 C. Adjustment of Sphere
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144 D. Electronic Circuit for Deter
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aMulti-SensorPlatform,PhDGeodesy Sw
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Accuracy-AeinTPS1200 AG, -Version 1
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-GenauigkeitsbetrachtungenInvestiga
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152 BibliographyWunderlich, T. A. [
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List of Figures3.22 Residuals of th
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156 List of Figures
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158 List of Tables
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200220072002Curriculum VitaePersona
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