Measurements using Optic and RF Waves

The scientific and technical basis underpinning modern measurement techniques used for electromagnetic quantities and phenonema is necessarily wide-ranging, as the electromagnetic environment spans all possible frequencies and wavelengths. Measurements must be applicable in fields as varied as nanotechnologies, telecommunications, meteorology, geo-location, radio-astronomy, health, biology, and many others. In order to adequately cover the many different facets of the topic, this book provides examples from the entire range of the electromagnetic spectrum — covering frequencies from several hertz to terahertz, and considering wavelength distances ranging from nanometers to light-years in optics. It then provides coverage of the various measurement techniques using electromagnetic waves for various applications, devoting chapters to each different field of application. This comprehensive book gives detailed information on: the various techniques and methods available to measure the key characteristics of electromagnetic waves, in terms of the local field and phase for a broad field of frequencies; determination of physical quantities such as distance, time, etc., using electromagnetic properties; new approaches to measurements in the field of electromagnetic distribution in complex structures media, such as biological tissues and in the nanosciences.

Table of Contents:
Preface xiii Chapter 1. Electromagnetic Environment 1 Pierre-Noël FAVENNEC 1.1. Electromagnetic radiation sources 1 1.2. Electromagnetic fields 18 1.3. Bibliography 21 Chapter 2. From Measurement to Control of Electromagnetic Waves using a Near-field Scanning Optical Microscope 23 Loïc LALOUAT, Houssein NASRALLAH, Benoit CLUZEL, Laurent SALOMON, Colette DUMAS and Frédérique DE FORNEL 2.1. Introduction 23 2.2. Principle of the measurement using a local probe 24 2.3. Measurement of the electromagnetic field distribution inside nanophotonic components 30 2.4. Measuring the amplitude and phase in optical near-field 39 2.5. Active optical near-field microscopy 41 2.6. Conclusion 45 2.7. Acknowledgements 45 2.8. Bibliography 45 Chapter 3. Meteorological Visibility Measurement: Meteorological Optical Range 51 Hervé SIZUN and Maher AL NABOULSI 3.1. Introduction 51 3.2. Definitions 52 3.3. Atmospheric composition 53 3.4. Atmospheric effects on light propagation 54 3.5. Units and scales 57 3.6. Measurement methods 58 3.7. Visibility perturbation factors 68 3.8. Applications 71 3.9. Appendix – optical contrast and Koschmieder’s law 75 3.10. Glossary 77 3.11. Bibliography 78 Chapter 4. Low Coherence Interferometry 81 Xavier CHAPELEAU, Dominique LEDUC, Cyril LUPI, Virginie GAILLARD and Christian BOISROBERT 4.1. Introduction 81 4.2. Phase measurement 82 4.3. Metrology considerations 86 4.4. Applications 91 4.5. Conclusion 106 4.6. Bibliography 107 Chapter 5. Passive Remote Sensing at Submillimeter Wavelengths and THz 113 Gérard BEAUDIN 5.1. Introduction 113 5.2. Submillimeter-THz low noise heterodyne receivers 115 5.3. Submillimeter – THz applications for astronomy and astrophysics 120 5.4. Submillimeter – THz remote-sensing applications to aeronomy and planetology 124 5.5. Conclusion 126 5.6. Acknowledgements 127 5.7. Bibliography 127 Chapter 6. Exposimetry – Measurements of the Ambient RF Electromagnetic Fields 131 Pierre-Noël FAVENNEC 6.1. Introduction 131 6.2. Definitions 132 6.3. Interactions of the electromagnetic fields with biological tissues and medical risks 136 6.4. Exposure limit values 141 6.5. Electromagnetic environment to be measured 146 6.6. Measurement equipment 150 6.7. Measurements 159 6.8. Control stations and uninterrupted electromagnetic measurements: towards a 3D electromagnetic land register 175 6.9. Appendix 1 – some field measurements 176 6.10. Appendix 2 – principal characteristics of mobile communication systems 177 6.11. Bibliography 177 Chapter 7. Ambient RF Electromagnetic Measurements in a Rural Environment 181 Hervé SIZUN and Philippe MALIET 7.1. Introduction 181 7.2. Measurement set-up 182 7.3. Operating mode 184 7.4. Different studies 185 7.5. Measurements results 186 7.6. Electrical field strength 188 7.7. Conclusion 189 7.8. Acknowledgements 189 7.9. Bibliography 189 Chapter 8. Radio Mobile Measurement Techniques 191 Hervé SIZUN 8.1. Introduction 191 8.2. Field strength measurements 192 8.3. Measurement of the impulse response 195 8.4. Measurement of directions of arrival 198 8.5. WiFi measurements in a home environment (field strength, data rate) 216 8.6. Conclusion 222 8.7. Glossary 224 8.8. Acknowledgments 225 8.9. Bibliography 225 Chapter 9. Dosimetry of Interactions Between the Radioelectric Waves and Human Tissues – Hybrid Approach of the Metrology 229 Joe WIART and Man Faï WONG 9.1. Introduction 229 9.2. Evaluation of the power absorber for the tissues 230 9.3. Experimental evaluation of the specific absorption rate (SAR) 232 9.4. SAR evaluation in biological tissues 235 9.5. Variability, representativeness and uncertainty 242 9.6. Conclusions 245 9.7. Bibliography 246 Chapter 10. Measurement for the Evaluation of Electromagnetic Compatibility 249 Philippe BESNIER, Christophe LEMOINE and Mohammed SERHIR 10.1. Introduction 249 10.2. General aspects of EMC measurement 250 10.3. Emissivity and radiated immunity testing 253 10.4. Efficiency and limitations of EMC measurement techniques 261 10.5. Mode-stirred reverberation chambers 262 10.6. Electromagnetic near-field measurement techniques applied to EMC 268 10.7. Conclusions and future prospects 272 10.8. Bibliography 272 Chapter 11. High Precision Pulsar Timing in Centrimetric Radioastronomy 277 Ismaël COGNARD 11.1. Introduction 277 11.2. Ultra-stable clocks to the limits of the Galaxy 277 11.3. Dispersion by the interstellar medium 280 11.4. Instrumentation used to study pulsars 281 11.5. Swept local oscillator dedispersion 282 11.6. Filterbank dedispersion 283 11.7. Real-time coherent dedispersion 284 11.8. The coherent pulsar instrumentation installed at Nançay 285 11.9. Conclusion 288 11.10. Bibliography 289 Chapter 12. Long Baseline Decameter Interferometry between Nançay and LOFAR 291 Philippe ZARKA 12.1. Introduction 291 12.2. Observations 293 12.3. Analysis 297 12.4. Conclusions and perspectives 303 12.5. Acknowledgements 305 12.6. Bibliography 305 List of Authors 307 Index 311

About the Author :
Frédérique de Fornel, director of research at the Centre National de la Recherche Scientifique (CNRS), is the head of the Near Field Optics Group at Bourgogne University, and past president of D commission of URSI (International Union of Radio Science). Pierre-Noël Favennec, Doctor of Science, author of numerous scientific books and articles is the director of the Collection Télécom and is past-president of URSI-France.