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Railroads --- Signaling

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Railroads --- Automation --- Automatic train control --- Human factors --- Signaling.

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Calcium Channels --- Calcium Signaling --- Calcium in the body. --- Calcium --- Calcium --- Physiology. --- Physiology. --- Physiological effect. --- Physiology.

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This book is concerned with the theory, development and design of electroacoustic transducers for underwater applications, and is more comprehensive than any existing book in this field. It includes the basics of the six major types of electroacoustic transducers, with emphasis on the piezoelectric ceramic transducers that are currently most widely used. It presents the basic acoustics, as well as specific acoustic data, needed in transducer design and includes analysis of nonlinear effects in transducers. A large number of specific transducer designs, including both projectors and hydrophones, are described in detail as well as methods of modeling, evaluation and measurement. Analysis of transducer arrays, including the effects of mutual radiation impedance, as well as numerical models for transducers and arrays are also covered. The book contains an extensive Appendix of useful current information, including data on the latest transduction materials, and numerous diagrams that will facilitate its use by students and practicing engineers and scientists.

Engineering sciences. Technology --- Computer. Automation --- beeldverwerking --- ingenieurswetenschappen --- signaalverwerking --- Underwater acoustics --- Transducers. --- Sonar. --- Instruments. --- Asdic --- Echo ranging --- Sound navigation ranging --- Detectors --- Electronics in navigation --- Signals and signaling, Submarine --- Ultrasonic equipment --- Electric apparatus and appliances --- Electromechanical devices --- Electronic apparatus and appliances

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Satellite navigation receivers are used to receive, process, and decode space-based navigation signals, such as those provided by the GPS constellation of satellites. There is an increasing need for a unified open platform that will enable enhanced receiver development and design, as well as cost-effective testing procedures for various applications. This book provide hands-on exploration of new technologies in this rapidly growing field. One of the unique features of the work is the interactive approach used, giving readers the ability to construct their own Global Navigation Satellite Systems (GNSS) receivers. To construct such a reconfigurable receiver with a wide range of applications, the authors discuss receiver architecture based on software-defined radio (SDR) techniques. The presentation unfolds in a systematic, user-friendly style and goes from the basics to cutting-edge research. Additional features and topics include: * Presentation of basic signal structures used in GPS and Galileo, the European satellite navigation system * Design and implementation of a GPS signal generator * Presentation and analysis of different methods of signal acquisition—serial search; parallel-frequency space search; and parallel-code phase search—as well as code/carrier tracking and navigation data decoding * A complete GPS software receiver implemented using MATLAB code as well as GPS and GIOVE-A signal records—allowing readers to change various parameters and immediately see their effects * MATLAB-based exercises * A hands-on method of testing the material covered in the book: supplementary front-end hardware equipment—which may be purchased at http://ccar.colorado.edu/gnss—enables readers working on a Windows or LINUX system to generate real-world data by converting analog signals to digital signals * Supplementary course material for instructors available at http://gps.aau.dk/softgps * Bibliography of recent results and comprehensive index The book is aimed at applied mathematicians, electrical engineers, geodesists, and graduate students. It may be used as a textbook in various GPS technology and signal processing courses, or as a self-study reference for anyone working with satellite navigation receivers.

Signals and signaling. --- Signal theory (Telecommunication) --- Global Positioning System. --- Signal processing. --- Artificial satellites in navigation. --- Navigation --- Processing, Signal --- Information measurement --- Global Navigation Satellite System --- GNSS (Navigational system) --- GPS (Navigational system) --- Navigation Satellite Timing and Ranging Global Positioning System --- NAVSTAR GPS --- Artificial satellites in navigation --- Mobile geographic information systems --- Electric signal theory --- Electric waves --- Signal detection --- Telecommunication --- Coastal signals --- Military signaling --- Naval signaling --- Communication --- Communications, Military --- Marine service --- Naval art and science --- Signs and symbols --- Flags --- Geography. --- Computer science. --- Engineering mathematics. --- Fourier analysis. --- Signal, Image and Speech Processing. --- Earth Sciences, general. --- Computational Science and Engineering. --- Mathematical and Computational Engineering. --- Fourier Analysis. --- Engineering --- Engineering analysis --- Mathematical analysis --- Analysis, Fourier --- Informatics --- Science --- Cosmography --- Earth sciences --- World history --- Mathematics --- Image processing. --- Speech processing systems. --- Earth sciences. --- Computer mathematics. --- Applied mathematics. --- Computer mathematics --- Electronic data processing --- Geosciences --- Environmental sciences --- Physical sciences --- Computational linguistics --- Electronic systems --- Information theory --- Modulation theory --- Oral communication --- Speech --- Singing voice synthesizers --- Pictorial data processing --- Picture processing --- Processing, Image --- Imaging systems --- Optical data processing