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SATELLITE COMMUNICATIONS PAYLOAD AND SYSTEM A valuable reference on communications satellite systems This book presents the state of the art in commercial communications satellite systems, thoroughly and in detail not to be found in any other book. These systems provide the television and some of the telephone and Internet services in use every day. The book focuses on the satellite payload, which consists of antennas, receivers, and transmitters. The book discusses the what, the how, and the why of various choices that have been made in currently operating systems. The book is organized into…mehr

Produktbeschreibung
SATELLITE COMMUNICATIONS PAYLOAD AND SYSTEM A valuable reference on communications satellite systems This book presents the state of the art in commercial communications satellite systems, thoroughly and in detail not to be found in any other book. These systems provide the television and some of the telephone and Internet services in use every day. The book focuses on the satellite payload, which consists of antennas, receivers, and transmitters. The book discusses the what, the how, and the why of various choices that have been made in currently operating systems. The book is organized into three parts: * In-depth description of various payload units, not requiring specialist knowledge. For each unit and the payload as a whole, the architectures, the theory of operation, analysis, performance, and specifications are presented. * End-to-end system context in which the payload operates. Digital communications theory and satellite communications protocols are introduced. The time-varying properties of satellite-to-ground links are explored. Tips on system simulation are given. * Current commercial end-to-end satellite communications systems, in their grand variety. Emphasis is placed on the satellite payload and its interactions with the satellite bus, ground stations, and user terminals. The second edition adds the third part of the book. Payload unit descriptions have been updated and enlarged. The communications theory chapter has been upgraded and the protocols chapter added to briefly describe all the elements mentioned in part 3. Non-geostationary satellite considerations have been included throughout the book. If you are a payload systems engineer, this book can serve as a valuable tool for expanding your knowledge base. If you're a graduate student, it will guide your introductory learning. As an industry professional, you can make this book a go-to reference.

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  • Produktdetails
  • Verlag: John Wiley & Sons
  • Seitenzahl: 720
  • Erscheinungstermin: 21. Juli 2021
  • Englisch
  • ISBN-13: 9781119384304
  • Artikelnr.: 62322211
Autorenporträt
Teresa M. Braun, PhD, has 26 years of experience in satellite and ground systems and technology, including 23 years in communications and three years in navigation at major corporations. She is the author of the first edition of Satellite Communications Payload and System and the co-proprietor of Braun Communications Consulting GmbH in Switzerland. Walter R. Braun, PhD, has over 40 years of experience in communication systems technology and analysis in the areas of satellite, military, mobile, powerline, and secure communications, mostly in Switzerland. He is the co-proprietor of Braun Communications Consulting GmbH.
Inhaltsangabe
1 Introduction 21.1 End-to-End Satellite Communications System 21.2 What the Book Is About 31.3 Channel and Channel Sharing 31.4 Payload 41.5 Ground Transmitter and Ground Receiver 71.6 System 81.7 Conventions 81.8 Book Sources 91.9 Summary of Rest of Book 10References 12PART I. PAYLOAD 22 Payload's On-Orbit Environment 22.1 What Determines Environment 22.2 On-Orbit Environment and Mitigation by Spacecraft Bus 82.3 General Effects of Mitigated Environment on Payload 19References 243 Antenna Basics and Single-Beam Antenna 23.1 Introduction 23.2 Examples of Single-Beam Antenna 23.3 General Antenna Concepts 33.4 Reflector-Antenna Basics 93.5 Steerable Single-Beam Antennas 153.6 Reflector Technology for Single-Beam Antennas 163.7 Horn for Single-Beam Antennas 173.8 Other Antenna Components 203.9 Antenna Pointing Error 243.10 Antenna Autotrack 263.11 Reflector-Antenna Inefficiencies 283.12 Testing 32References 354 Payload-Integration Elements 24.1 Introduction 24.2 Coaxial Cable vs. Waveguide 24.3 Coaxial Cable 24.4 Waveguide 74.5 Other Integration Elements 134.6 Redundancy Configurations 174.7 Impedance Mismatch and Scattering Parameters 21References 265 Microwave Filter 25.1 Introduction 25.2 Basics of Analog Filters 25.3 Basics of Specifically Microwave Filters 75.4 Technology for Bandpass Filters 135.5 Filter Units 175.6 Bandpass Filter Specification 23References 246 Low-Noise Amplifier and Frequency Converter 26.1 Introduction 26.2 LNAs and Frequency Converters in Payload 26.3 Nonlinearity of LNA and Frequency Converter 46.4 Noise Figure 86.5 Low-Noise Amplifier 86.6 Frequency Converter 116.7 Receiver 236.A Appendix. Formula for Integrating Phase Noise Spectrum 24References 247 Preamplifier and High-Power Amplifier 27.1 Introduction 27.2 HPA Concepts and Terms 27.3 Traveling-Wave Tube Amplifier vs. Solid-State Power Amplifier 77.4 Traveling-Wave Tube Subsystem 97.5 Solid-State Power Amplifier 26References 348 Payload's Analog Communications Parameters 28.1 Introduction 28.2 Gain Variation with Frequency 48.3 Phase Variation with Frequency 78.4 Channel Bandwidth 98.5 Phase Noise 108.6 Frequency Stability 108.7 Spurious Signals from Frequency Converter 108.8 HPA Nonlinearity 118.9 Near-Carrier Spurious Signals from HPA Subsystem 128.10 Stability of Gain and Power-Out 138.11 Equivalent Isotropic Radiated Power 148.12 Figure of Merit G/Ts 158.13 Saturation Flux Density 178.14 Self-Interference 178.15 Passive Intermodulation Products 198.A Appendices 20References 219 More Analyses for Payload Development 29.1 Introduction 29.2 How to Deal with Noise Figure 29.3 How to Make and Maintain Payload Performance Budgets 49.4 HPA Topics 169.5 What Nonlinearity Does to Modulated Signal 209.6 Simulating Payload Performance as a Function of Gaussian Random Variables 24References 2410 Processing Payload and Flexible Payload 210.1 Introduction 210.2 Processing Operations 710.3 Non-Regenerative Processing Payloads 1310.4 Regenerative Payloads 1610.5 Communications Parameters of Digital Processing Payload 20References 2011 Multi-Beam Antenna and Phased Array 211.1 Introduction 211.2 MBA Introduction 311.3 Reflector for MBA or Contoured Beam and Configuration of Feeds 611.4 Horn and Feed Assembly for GEO 1111.5 Location of Radiating Elements in Offset-Fed Reflector MBA 1611.6 Single-Feed-Per-Beam MBA 1911.7 Phased Array Introduction 2011.8 Radiating Element of Phased Array 2311.9 Beam-Forming Network 2711.10 Applications of Phased Array 3011.11 Beam-Hopping 3211.12 Amplification of Phased Array 3311.13 Phased Array Pointing Error 3911.14 Mutual Coupling in Radiating-Element Cluster 4011.15 Testing MBA 41References 42PART II. END-TO-END SATELLITE COMMUNICATIONS SYSTEM 212 Digital Communications Theory 212.1 Introduction 212.2 Signal Representation 212.3 Filtering in General 712.4 White Gaussian Noise 812.5 End-to-End Communications System 912.6 Bit Manipulation 1012.7 Modulation Introduction 1412.8 Memoryless Modulation 1412.9 Maximum-Likelihood Estimation 2212.10 Demodulation for Memoryless Modulation 2312.11 Modulation with Memory 3212.12 Maximum-Likelihood Sequence Estimation 3412.13 Demodulation for Modulation with Memory 3412.14 Bit Recovery 3512.15 Inter-Symbol Interference 3612.16 SNR, Es/N0, and Eb/N0 3912.A Appendix. Sketch of Proof That Pulse Transform and Signal Spectrum Are Related for Memoryless Modulation 41References 4213 Satellite Communications Standards 213.1 Introduction 213.2 Background 213.3 Application Examples of First-Generation Standards 613.4 Second-Generation DVB Communications Standards 813.5 Satmode Communications Standard 15References 1614 Communications Link 214.1 Introduction 214.2 Primary Information Sources 214.3 Link Availability 314.4 Signal Power on Link 414.5 Noise Level on Link 1814.6 Interference on Link 1914.7 End-to-End C/(N0 + I0) 2914.8 Link Budget 3014.9 Implementation Loss Item in Link Budget 32References 3215 Probabilistic Treatment of Downlink Margin for Multi-Beam Payload 215.1 Introduction 215.2 Multi-Beam-Downlink Payload Specifications 215.3 Analysis Method 315.4 Analysis Assumptions 415.5 Repeater-Caused Variation of C and C/Iself and Nominal Value 515.6 Combining Antenna-Caused Variation and Nominal Value into Repeater-Caused Variation 1115.7 Combining Atmosphere-Caused Variation into Payload-Caused Variation 1415.8 Optimizing Multi-Beam-Downlink Payload Specified on Link Availability 1515.A Appendix. Iteration Details for Optimizing Multi-Beam Payload Specified on Link Availability 1616 Model of End-to-End Communications System 216.1 Introduction 216.2 Considerations for Both Software Simulation and Hardware Emulation 216.3 Additional Considerations for Simulation 616.4 Additional Considerations for Emulation 15References 18PART III. SATELLITE COMMUNICATIONS SYSTEMS 217 Fixed and Broadcast Satellite Services 217.1 Introduction 217.2 Satellite Television 217.3 Regulations in General 417.4 Fixed Satellite Service 417.5 Broadcast Satellite Service 13References 1718 High-Throughput Satellites 218.1 Introduction 218.2 Frequency and Bandwidth 418.3 Residential Internet HTS 618.4 Commercial Communications HTS 13References 1519 Non-Geostationary Satellite Systems 219.1 Introduction 219.2 Iridium 319.3 Globalstar 919.5 O3b 1419.6 OneWeb 2119.7 Starlink 2619.8 Telesat LEO 32References 3320 Mobile Satellite Systems 220.1 Introduction 220.2 Thuraya 520.3 Inmarsat-4 and Alphasat 1220.4 TerreStar/EchoStar XXI 2720.5 SkyTerra 3520.6 Inmarsat-5 (Global Xpress) F1-F4 44References 5