Kommunikationsteknik / telekommunikation

This edited book presents the state of the art in voice biometrics research and technologies including implementation and deployment challenges in terms of interoperability, scalability and performance, and security.

This book takes the reader through the development of a Ground Penetrating Radar (GPR) system, stressing the parameters that can be optimized and explaining the theory behind the GPR assessment. The authors provide a detailed discussion of the support tools and the numerical modeling of the system to improve readings from GPR systems.

These articles on 3DTV and 3D movies were written over the last two decades of the 46 year period since I began. They are illustrated with original photos and historical materials resulting from thousands of hours researching the technical and patent literature and attending and exhibiting at trade shows. I decided to publish them in a book as they have only existed in scattered locations and they have proven quite popular when I recently posted some of them on the net. They present information and viewpoints difficult or impossible to find that nicely supplement what is available elsewhere. The comprehensive coverage of various trade shows held at the peak of the 3D frenzy (ca 2009-11) are a unique record of what was actually available in the market place at major international shows. To attend one of them would cost the average participant over $1000 and a week's time, with many hours a day walking the floor, fighting the crowds and exhaustion, and very few would see or understand most of what was on display. This was easier for me as I had already spent 36 years studying 3D full time. I exerted the most effort at NAB (the National Association of Broadcasters) where I trudged the aisles about 8 hours a day for 5 days visiting most of the 3D relevant booths twice, and then spent several weeks reading and researching to put them into context. The patent and technical literature searches however occupied four decades. I also include several practical articles on making and viewing 3D video that include numerous tips not present in the many books and articles I have seen. I make no attempt to repeat the material in the excellent books and countless articles that have appeared recently. Those who want a fairly comprehensive coverage of 3D technology should get the SPIE CD with many hundreds of articles from 1977 to 2009 ISBN-10: 0819476595 and subsequent proceedings, and of course for the diligent there is no substitute for the patent literature.

Radar technology allows for touchless wireless gesture sensing by transmitting radio frequency (RF) signals to the target, accurately detecting gestures for Human Computer Interaction (HCI). Led by researchers from Google's Project Soli, the authors introduce the concept and underpinning technology.

Developed by an international team of experts, this book covers free space optical (FSO) communication technologies for realising high speed large-capacity terrestrial and aerospace communications.

This book outlines the potential for microwave photonics in radar and electronic warfare systems, covering basic concepts and functions, comparing performance with conventional systems, describing its impact on digital signal processing, and exploring integration issues.

Designed for ICT professionals involved in the planning, design, development, testing and operation of network services, this book is ideal for self-teaching. It will help readers evaluate a network situation and identify the most important aspects to be monitored and analysed.

This book addresses the growing conflict over use of the radio-frequency spectrum by different systems, such as civil and security applications of radar and consumer use for wireless communications. The increasing demand for this finite resource is driving innovation into new ways in which these diverse systems can cohabit the spectrum.

Hand-based biometrics identifies users by unique features in their hands, such as fingerprints, palmprints, hand geometry, and finger and palm vein patterns. This book explores the range of technologies and methods under development and in use for hand-based biometrics, with evaluations of the advantages and performance of each.