Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Zürich
Schweizerische Geodätische Komm.
2014
|
| Schriftenreihe: | Geodätisch-geophysikalische Arbeiten in der Schweiz
92 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zugl.: Diss., 2014 |
| Beschreibung: | 210 S. Ill., graph. Darst. |
| ISBN: | 9783908440352 |
Internformat
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| 245 | 1 | 0 | |a Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation |c Stefan Walter Münch |
| 264 | 1 | |a Zürich |b Schweizerische Geodätische Komm. |c 2014 | |
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Datensatz im Suchindex
| _version_ | 1804153306453377024 |
|---|---|
| adam_text | Contents
1 Introduction 1
1 1 Goals of this work 2
1 2 Outline of the thesis 2
2 Atmospheric Water Vapour 5
2 1 Significance in Meteorology 8
2 2 Significance in Climatology 8
2 3 Influence on geodetic applications 10
231 Total Propagation Delay 10
232 Wet and Dry Path Delay 11
Path Delay Modelling 12
233 Path Delay and Precipitable Water Vapour 13
234 Mapping Function 14
2 4 Retrieval Methods 14
241 In-situ measurements 15
242 Water Vapour Radiometry 16
243 LIDAR 18
Water Vapour Raman LIDAR 20
Differential Optical Absorption LIDAR (DIAL) 20
244 Fourier Transform Infra-red Spectrometry (FTIR) 21
245 Solar and Lunar Spectrophotometry 21
246 GNSS Meteorology 22
GNSS Tomography 25
3 Principle of Solar Lunar Spectrometry 27
3 1 Absorption Spectroscopy 27
3 2 Differential Optical Absorption Spectroscopy (DOAS) 28
3 3 Absorption Spectra 30
331 Absorption Process 30
3 4 Water vapour absorption properties 31
Water Vapour Dimers 33
3 5 Spectral line characteristics 35
351 Line Strength 36
352 Line Broadening 37
Natural Line Width 37
Doppler Broadening 37
Collision Broadening 38
Voigt Profile 38
3 6 Apparatus Influcence on Spectra 39
3 7 DOAS Set-Up Characteristics 40
Active DOAS versus Passive DOAS 40
Measurement Platforms 41
Light Paths 41
3 8 Passive DOAS 41
381 Solar Irradiance 41
382 Spectral Characteristics of Moonlight 43
ix
Contents
3 9 Total Column Concentration Extraction 43
391 Preprocessing of Measured Spectra 45
392 Spectra Simulation 47
393 Ray Path Modelling 47
394 Atmospheric Modelling 48
3 10 Spectroscopic Databases 49
3 10 1 HITRAN2008 50
3 10 2 ESA-WVR 50
3 10 3 UCL08 51
3 11 Least-squares fit algorithm 51
4 SOLUSAR - System Design 53
4 1 System Requirements 53
4 2 General System Design 54
4 3 Smart Telescope 56
4 4 Spectrometer Unit - Fundamentals 59
441 Echelle Spectrometer 60
4 5 SOLUSAR Spectrometer 64
451 Mounting of Plane Gratings 64
452 Echelle Grating Dimensioning 65
453 Internal Cross Dispersion 65
454 Ray Tracing 66
4 6 Detector 66
461 SOLUSAR Detector Requirements 72
462 Charge Coupled Device (CCD) 73
463 SOLUSAR Detector 75
464 Etaloning 75
4 7 Entrance Slit Group 78
471 Shutter and Optical Filters 80
4 8 Built-in Light Sources 81
481 Flat-field Lamp 81
482 Spectral lamp 81
4 9 Homogenization Unit 83
491 Causes of Etaloning Distortion in SOLUSAR Transmission Spectra 83
492 Etaloning Countermeasures 86
Homogenizing Rods 86
Polymeric Optical Fibre 87
Quartz Optical Fibres with Hexagonal Cross Section 87
Holographic Diffusers 88
493 Homogenization quality 89
4 10 Electronics 90
4 10 1 Computer Unit 92
4 10 2 General Aspects of SOLUSAR Motion Control 95
Folding Mirror Motorization 96
4 10 3 Telescope Control Hardware 96
Quadrant Diode 97
DC Motor Drives 99
4 10 4 USB I/O-Module 100
4 10 5 External Sensors 101
Time Referencing and Positioning 101
** Meteorological Sensor 101
4 10 6 Electric Disturbance Suppression 102
4 11 Instrument Mechanical Structure, Enclosure and Mounting 103
x
Contents
5 Measurement Process 109
5 1 Telescope Control 109
511 Telescope Orientation 109
Internal Orientation 110
External Orientation using the Sun 112
External Orientation using an Electronic Compass 114
512 Smart Telescope Control Cycle 118
Quadrant Diode Signal Treatment 118
513 Target Tracking 121
5 2 CCD Readout 121
521 Full Frame Readout vs Hardware Binning 121
522 Exposure Time Determination 124
5 3 Wavelength Stabilization 125
531 Stabilization using Lamp Spectra 126
532 Stabilization using Solar/Lunar Spectra 127
5 4 Dynamic Apparatus Function Determination 127
5 5 Control Software 129
6 Data Preprocessing 133
6 1 Retrieved Primary Datasets 133
6 2 Dark Image Correction 133
6 3 Extraction of Diffraction Order 136
6 4 Stray light Correction 138
6 5 Vertical Binning 141
6 6 Flat-field Correction 142
6 7 Wavelength Referencing 142
6 8 Baseline Retrieval 143
7 Data Processing and Measurement Results 147
7 1 Aspects of Spectra Simulation 147
711 Comparison of Spectral Databases 147
7 2 Adjustment Process 151
721 Selection of Absorption Lines 151
722 Adjustment Process Parameters 158
7 3 Assessment of Accuracy 158
731 Stochastic Uncertainty Sources 160
Shot Noise 160
Dark Noise 160
Read Noise / Interferences 161
Stray Light 161
Etaloning 161
Compound Stochastic Influence 162
732 Modelling Errors and Systematic Influences 164
Baseline Accuracy 164
Absorption Line Strength Accuracy 167
Apparatus Function Modelling Errors 168
Atmospheric Modelling Errors 170
Telescope Aiming Errors 172
,74 SOLUSAR I versus SOLUSAfl II 173
7 5 Solar Spectrometry versus GPS meteorology 176
7 6 Lunar Measurements 180
xi
Contents
8 Conclusions and Outlook 187
8 1 Project Overview and Conclusions 187
8 2 Outlook 191
821 Immediate Measures 191
822 Recommendations for Future Direct Light Measurement Systems 192
823 Expansion of Methodology 194
Bibliography 197
A Electronic Layout Details 207
A l DC Motor Control 207
A 2 Stepper Motor Control 208
A 3 Motion Control Interface 209
A 4 Temperature Sensor 210
A 5 Electronic Compass 210
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| id | DE-604.BV042542244 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T01:24:31Z |
| institution | BVB |
| isbn | 9783908440352 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-027976278 |
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| owner_facet | DE-2174 DE-706 |
| physical | 210 S. Ill., graph. Darst. |
| publishDate | 2014 |
| publishDateSearch | 2014 |
| publishDateSort | 2014 |
| publisher | Schweizerische Geodätische Komm. |
| record_format | marc |
| series | Geodätisch-geophysikalische Arbeiten in der Schweiz |
| series2 | Geodätisch-geophysikalische Arbeiten in der Schweiz |
| spelling | Münch, Stefan Walter Verfasser aut Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation Stefan Walter Münch Zürich Schweizerische Geodätische Komm. 2014 210 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Geodätisch-geophysikalische Arbeiten in der Schweiz 92 Zugl.: Diss., 2014 Messsystem (DE-588)4169536-7 gnd rswk-swf Messsystem (DE-588)4169536-7 s DE-604 Geodätisch-geophysikalische Arbeiten in der Schweiz 92 (DE-604)BV001895327 92 HEBIS Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027976278&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Münch, Stefan Walter Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation Geodätisch-geophysikalische Arbeiten in der Schweiz Messsystem (DE-588)4169536-7 gnd |
| subject_GND | (DE-588)4169536-7 |
| title | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation |
| title_auth | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation |
| title_exact_search | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation |
| title_full | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation Stefan Walter Münch |
| title_fullStr | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation Stefan Walter Münch |
| title_full_unstemmed | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation Stefan Walter Münch |
| title_short | Atmospheric Water Vapour Sensing By Means of Differential Absorption Spectrometry Using Solar And Lunar Radiation |
| title_sort | atmospheric water vapour sensing by means of differential absorption spectrometry using solar and lunar radiation |
| topic | Messsystem (DE-588)4169536-7 gnd |
| topic_facet | Messsystem |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027976278&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV001895327 |
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