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1. |
Record Nr. |
UNIBAS000026766 |
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Autore |
Westphal, Bertrand |
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Titolo |
La géocritique : rèèl, fiction, espace / Bertrand Westphal |
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Pubbl/distr/stampa |
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Paris : <<Les>> editions de Minuit, c2007 |
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ISBN |
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Descrizione fisica |
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Collana |
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Disciplina |
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Soggetti |
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Geografia nella letteratura |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910462947103321 |
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Autore |
Sulick Michael J |
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Titolo |
Spying in America [[electronic resource] ] : espionage from the Revolutionary War to the dawn of the Cold War / / Michael J. Sulick |
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Pubbl/distr/stampa |
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Washington, D.C., : Georgetown University Press, c2012 |
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ISBN |
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1-58901-927-X |
1-62616-066-X |
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Descrizione fisica |
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1 online resource (335 p.) |
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Disciplina |
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Soggetti |
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Espionage - United States |
Espionage - United States - History |
Spies - United States |
Spies - United States - History |
Espionage, German - United States - History - 20th century |
Spies - Communist countries - History - 20th century |
Military intelligence - United States - History |
Electronic books. |
United States History Civil War, 1861-1865 Secret service |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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pt. 1. The Revolutionary War -- pt. 2. The Civil War -- pt. 3. Espionage during the World Wars, 1914-45 -- pt. 4. The golden age of Soviet espionage : the 1930s and 1940s -- pt. 5. The atomic bomb spies : prelude to the cold war. |
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Sommario/riassunto |
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Can you keep a secret?. Maybe you can, but the United States government cannot. Since the birth of the country, nations large and small, from Russia and China to Ghana and Ecuador, have stolen the most precious secrets of the United States. Written by Michael Sulick, former director of CIA's clandestine service, Spying in America presents a history of more than thirty espionage cases inside the United States. These cases include Americans who spied against their country, spies from both the Union and Confederacy during the Civil War, and foreign agents who ran operations on American soil. Some |
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3. |
Record Nr. |
UNISA996203932903316 |
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Autore |
Ippolito Louis J. |
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Titolo |
Satellite communications systems engineering : atmospheric effects, satellite link design and system performance / / Louis J. Ippolito, Jr |
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Pubbl/distr/stampa |
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Chichester : $bWiley, , , c2008 |
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[Piscataqay, New Jersey] : , : IEEE Xplore, , [2008] |
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ISBN |
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1-281-84090-4 |
9786611840907 |
0-470-75444-3 |
0-470-75445-1 |
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Descrizione fisica |
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1 online resource (396 p.) |
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Collana |
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Wiley series on wireless communications and mobile computing |
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Disciplina |
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Soggetti |
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Artificial satellites in telecommunication |
Broadband communication systems |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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List of Acronyms -- Preface -- Chapter 1 Introduction to Satellite Communications -- 1.1 Early History of Satellite Communications -- 1.2 Some Basic Communications Satellite System Definitions -- 1.3 Regulatory Process for Satellite Communications -- 1.4 Overview of Book Structure and Topics -- References -- Chapter 2 Satellite Orbits -- 2.1 Kepler's Laws -- 2.2 Orbital Parameters -- 2.3 Orbits in Common Use -- 2.4 Geometry of GSO Links -- References -- Problems -- Chapter 3 Satellite Subsystems -- 3.1 Satellite Bus -- 3.2 Satellite Payload -- References -- Chapter 4 The RF Link -- 4.1 Transmission Fundamentals -- 4.2 System Noise -- 4.3 Link Performance Parameters -- References -- Problems -- Chapter 5 Link System Performance -- 5.1 Link Considerations -- 5.2 Uplink -- 5.3 Downlink -- 5.4 Percent of Time Performance Specifications -- References -- Problems -- Chapter 6 Transmission Impairments -- 6.1 Radiowave Frequency and Space Communications -- 6.2 Radiowave Propagation Mechanisms -- 6.3 Propagation Below About 3 GHz -- 6.4 Propagation Above About 3 GHz -- 6.5 Radio Noise -- References -- Problems -- Chapter 7 Propagation Effects Modeling and Prediction -- 7.1 Atmospheric Gases -- 7.2 Clouds and Fog -- 7.3 Rain Attenuation -- 7.4 Depolarization -- 7.5 Tropospheric Scintillation -- References -- Problems -- Chapter 8 Rain Fade Mitigation -- 8.1 Power Restoral Techniques -- 8.2 Signal Modification Restoral Techniques -- 8.3 Summary -- References -- Problems -- Chapter 9 The Composite Link -- 9.1 Frequency Translation (FT) Satellite -- 9.2 On-Board Processing (OBP) Satellite -- 9.3 Comparison of FT and OBP Performance -- 9.4 Intermodulation Noise -- 9.5 Link Design Summary -- References -- Problems -- Chapter 10 Satellite Multiple Access -- 10.1 Frequency Division Multiple Access -- 10.2 Time Division Multiple Access -- 10.3 Code Division Multiple Access -- References -- Problems -- Chapter 11 The Mobile Satellite Channel -- 11.1 Mobile Channel Propagation -- 11.2 Narrowband Channel. |
11.3 Wideband Channel -- 11.4 Multi-Satellite Mobile Links -- References -- Appendix A Satellite Signal Processing Elements -- A.1 Analog Systems -- A.2 Digital Baseband Formatting -- A.3 Digital Source Combining -- A.4 Digital Carrier Modulation -- A.5 Summary -- References -- Appendix B Error Functions and Bit Error Rate -- B.1 Error Functions -- B.2 Approximation for BER -- Index. |
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Sommario/riassunto |
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Provides an invaluable, detailed and up-to-date coverage of atmospheric effects and their impact on satellite communications systems design and performance. Significant progress has been made in the last decade in the understanding and modelling of propagation effects on radio wave propagation in the bands utilized for satellite communications. This book provides a comprehensive description and analysis of all atmospheric effects of concern for today's satellite systems, and the tools necessary to design the links and to evaluate system performance. This book will serve as an excellent reference to communications engineers, wireless network and system engineers, system designers and graduate students in satellite communications and related areas. Key features: . Provides the state of the art in communications satellite link design and performance from the practicing engineer perspective / concise descriptions, specific procedures and comprehensive solutions . Contains the calculations and tools necessary for evaluating system performance . Provides a complete evaluation of atmospheric effects, modelling and prediction . |
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Focuses on the satellite free-space link as the primary element in the design and performance for satellite communications, and recognizes the importance of free-space considerations such as atmospheric effects, frequency of operation and adaptive mitigation techniques . Contains sample calculations and step-by-step methods for calculating many propagation effects Dr. Louis Ippolito, over a brilliant career has done it all. He's carried out satellite research at NASA, designed satellite systems for the aerospace industry, and taught satellite engineering at The George Washington University. Now, in a comprehensive and highly readable book, he has encapsulated his knowledge in clear and quite intelligent form. His completely up-to-date book covers the latest innovations that range from mobile satellites to millimeter wave satellites and associated rain fade mitigation technologies. His chapters on propagation effects modeling and prediction, RF transmission impairments and link systems performance are truly outstanding. If you want to understand satellite communications and RF propagation, you need Dr. Ippolito's book. Dr. Joseph N. Pelton, Former Dean, International Space University, founding President of the Society of Satellite Professionals International (SSPI), and author of a number of books on satellite communications including Wireless and Satellite Telecommunications. |
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