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1. |
Record Nr. |
UNINA9910141296403321 |
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Autore |
Boccia William A. Imbriale. Steven Gao. Luigi |
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Titolo |
Space Antenna Handbook / / William A. Imbriale. Steven Gao. Luigi Boccia |
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Pubbl/distr/stampa |
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[S.l.] : , : John Wiley & Sons, , 2012 |
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[Piscataqay, New Jersey] : , : IEEE Xplore, , [2012] |
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ISBN |
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1-280-59101-3 |
9786613620842 |
1-119-94514-3 |
1-119-94513-5 |
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Edizione |
[1st edition] |
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Descrizione fisica |
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1 online resource (774 p.) |
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Altri autori (Persone) |
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ImbrialeW. A (William A.) |
GaoSteven |
BocciaLuigi |
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Disciplina |
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Soggetti |
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Antennas (Electronics) |
Space vehicles - Radio antennas |
Artificial satellites in telecommunication |
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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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3.13 Rx Front-End Block3.13.1 Noise Figure and Noise Temperature; 3.14 Received Power in the Communications System's RF Link; 3.14.1 The Angular Dependencies of the Uplink and Downlink; 3.15 Additional Losses in the Satellite and Antenna; 3.15.1 Additional Losses due to Propagation Effects and the Atmosphere; 3.15.2 Ionospheric Effects -- Scintillation and Polarization Rotation; 3.16 Thermal Noise and the Antenna Noise Temperature; 3.16.1 The Interface between the Antenna and the Communications System; 3.16.2 The Uplink Signal to Noise; 3.17 The SNR Equation and Minimum Detectable Signal. |
3.7 Remote Sensing Satellites3.8 Architecture of Satellite Command and Control; 3.9 The Communications Payload Transponder; 3.9.1 Bent-Pipe Transponders; 3.9.2 Digital Transponders; 3.9.3 Regenerative Repeater; 3.10 Satellite Functional Requirements; 3.10.1 Key Performance Concepts: Coverage, Frequency Allocations; 3.10.2 Architecture of the Communications Payload; 3.10.3 Satellite |
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Communications System Performance Requirements; 3.11 The Satellite Link Equation; 3.12 The Microwave Transmitter Block; 3.12.1 Intercept Point; 3.12.2 Output Backoff; 3.12.3 The Transmit Antenna and EIRP. |
2.4 Case Studies: Effects of the Satellite Body on the Radiation Patterns of Antennas2.5 Summary; Acknowledgments; References; 3 System Architectures of Satellite Communication, Radar, Navigation and Remote Sensing; 3.1 Introduction; 3.2 Elements of Satellite System Architecture; 3.3 Satellite Missions; 3.4 Communications Satellites; 3.4.1 Fixed Satellite Services; 3.4.2 Broadcast Satellite Services (Direct Broadcast Services); 3.4.3 Digital Audio Radio Services; 3.4.4 Direct to Home Broadband Services; 3.4.5 Mobile Communications Services; 3.5 Radar Satellites; 3.6 Navigational Satellites. |
1.3.4 Helical Antennas1.3.5 Printed Antennas; 1.4 Arrays; 1.4.1 Array Configurations; 1.5 Basic Effects of Antennas in the Space Environment; 1.5.1 Multipaction; 1.5.2 Passive Inter-modulation; 1.5.3 Outgassing; References; 2 Space Antenna Modeling; 2.1 Introduction; 2.1.1 Maxwell's Equations; 2.1.2 CEM; 2.2 Methods of Antenna Modeling; 2.2.1 Basic Theory; 2.2.2 Method of Moments; 2.2.3 FEM; 2.2.4 FDTD Method; 2.3 Fast Algorithms for Large Space Antenna Modeling; 2.3.1 Introduction; 2.3.2 MLFMA; 2.3.3 Hierarchical Basis for the FEM. |
Space Antenna HANDBOOK; Contents; Preface; Acknowledgments; Acronyms; Contributors; 1 Antenna Basics; 1.1 Introduction; 1.2 Antenna Performance Parameters; 1.2.1 Reflection Coefficient and Voltage Standing Wave Ratio; 1.2.2 Antenna Impedance; 1.2.3 Radiation Pattern and Coverage; 1.2.4 Polarization; 1.2.5 Directivity; 1.2.6 Gain and Realized Gain; 1.2.7 Equivalent Isotropically Radiated Power; 1.2.8 Effective Area; 1.2.9 Phase Center; 1.2.10 Bandwidth; 1.2.11 Antenna Noise Temperature; 1.3 Basic Antenna Elements; 1.3.1 Wire Antennas; 1.3.2 Horn Antennas; 1.3.3 Reflectors. |
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Sommario/riassunto |
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This book addresses a broad range of topics on antennas for space applications. First, it introduces the fundamental methodologies of space antenna design, modelling and analysis as well as the state-of-the-art and anticipated future technological developments. Each of the topics discussed are specialized and contextualized to the space sector. Furthermore, case studies are also provided to demonstrate the design and implementation of antennas in actual applications. Second, the authors present a detailed review of antenna designs for some popular applications such as satellite communications. |
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2. |
Record Nr. |
UNISA996550550503316 |
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Autore |
Zhang Yuchao |
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Titolo |
Web Services – ICWS 2023 [[electronic resource] ] : 30th International Conference, Held as Part of the Services Conference Federation, SCF 2023, Honolulu, HI, USA, September 23–26, 2023, Proceedings / / edited by Yuchao Zhang, Liang-Jie Zhang |
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Pubbl/distr/stampa |
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Cham : , : Springer Nature Switzerland : , : Imprint : Springer, , 2023 |
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ISBN |
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Edizione |
[1st ed. 2023.] |
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Descrizione fisica |
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1 online resource (130 pages) |
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Collana |
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Lecture Notes in Computer Science, , 1611-3349 ; ; 14209 |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Data protection - Law and legislation |
Computer engineering |
Computer networks |
Data protection |
Operating systems (Computers) |
Privacy |
Computer Engineering and Networks |
Data and Information Security |
Operating 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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Nota di contenuto |
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Research Track: A Multi-Armed Bandits Learning-Based Approach to Service Caching in Edge Computing Environment -- A Gap Between Automated Service Composition Research and Software Engineering Development Practice: Service Descriptions -- SPaMeR: Securing Patient Medical Records in the Cloud: A Microservice and Brokerless Architecture Approach -- Applying Blockchain Technology for Privacy Preservation in Android Platforms -- Application and Industry Track: A Semi-Supervised Learning Based Method for Identifying Idle Virtual Machines in Managed Cloud: Application and Practice -- MyKSC: Loosely-Coupled Containerized Supercomputer Platform -- Research on Network Slicing Deployment Strategy for High Reliability Power |
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Business Service -- Short Paper Track: An In-Depth Examination of Ultra-Wide Band (UWB) Pulse Duration for Accurate Localization. |
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Sommario/riassunto |
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This book constitutes the proceedings of the 30th International Conference on Web Services, ICWS 2023, held as Part of the Services Conference Federation, SCF 2023, held in Honolulu, HI, USA, in September 2023. The 7 full papers and one short paper presented in this volume were carefully reviewed and selected from 14 submissions. The papers cover topics in the field of: research track; application and industry track and short paper track. The International Conference on Web Services (ICWS) has been a prime international forum for both researchers and industry practitioners to exchange the latest fundamental advances in the state of the art and practice of Web-based services, identify emerging research topics, and define the future of Web-based services. All topics regarding Internet/Web services lifecycle study and management align with the theme of ICWS. |
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3. |
Record Nr. |
UNIORUON00190524 |
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Autore |
BURKE, Edmund |
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Titolo |
Speeches and letters on American affairs / Edmund Burke ; introduction by Peter McKevitt |
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Pubbl/distr/stampa |
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London, : Dent ; New York, : Dutton, 1956 |
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Descrizione fisica |
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Disciplina |
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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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