图书简介
There have been many changes in the thirty three years since the first edition of Satellite Communications was published. There has been a complete transition from analog to digital communication systems, with analog techniques replaced by digital modulation and digital signal processing. While distribution of television programming remains the largest sector of commercial satellite communications, low earth orbit constellations of satellites for Internet access are set to challenge that dominance.In the third edition, chapters one through three cover topics that are specific to satellites, including orbits, launchers, and spacecraft. Chapters four through seven cover the principles of digital communication systems, radio frequency communications, digital modulation and multiple access techniques, and propagation in the earths atmosphere, topics that are common to all radio communication systems. Chapters eight through twelve cover applications that include non-geostationary satellite systems, low throughput systems, direct broadcast satellite television, Internet access by satellite, and global navigation satellite systems. The chapter on Internet access by satellite is new to the third edition, and each of the chapters has been extensively revised to include the many changes in the field since the publication of the second edition in 2003. Two appendices have been added that cover digital transmission of analog signals, and antennas.
Preface xi About the Authors xv 1 Introduction 1 1.1 Background 1 1.2 A Brief History of Satellite Communications 5 1.3 Satellite Communications in 2018 9 1.4 Overview of Satellite Communications 11 1.5 Summary 14 1.6 Organization of This Book 15 References 16 2 Orbital Mechanics and Launchers 17 2.1 Introduction 17 2.2 Achieving a Stable Orbit 17 2.3 Kepler’s Three Laws of Planetary Motion 23 2.4 Describing the Orbit of a Satellite 25 2.5 Locating the Satellite in the Orbit 27 2.6 Locating the Satellite with Respect to the Earth 29 2.7 Orbital Elements 31 2.8 Look Angle Determination 33 2.9 Orbital Perturbations 42 2.10 Orbit Determination 46 2.11 Space Launch Vehicles and Rockets 47 2.12 Placing Satellites Into Geostationary Orbit 56 2.13 Orbital Effects in Communications Systems Performance 59 2.14 Manned Space Vehicles 62 2.15 Summary 64 Exercises 65 References 68 3 Satellites 71 3.1 Satellite Subsystems 72 3.2 Attitude and Orbit Control System (AOCS) 75 3.3 Telemetry, Tracking, Command, and Monitoring (TTC&M) 84 3.4 Power Systems 88 3.5 Communications Subsystems 90 3.6 Satellite Antennas 100 3.7 Equipment Reliability and Space Qualification 107 3.8 Summary 113 Exercises 114 References 116 4 Satellite Link Design 119 4.1 Introduction 119 4.2 Transmission Theory 125 4.3 System Noise Temperature and G/T Ratio 130 4.4 Design of Downlinks 142 4.5 Ku-Band GEO Satellite Systems 149 4.6 Uplink Design 158 4.7 Design for Specified CNR: Combining CNR and C/I Values in Satellite Links 163 4.8 System Design for Specific Performance 167 4.9 Summary 188 Exercises 189 References 193 5 Digital Transmission and Error Control 195 5.1 Digital Transmission 197 5.2 Implementing Zero ISI Transmission in the Time Domain 215 5.3 Probability of Error in Digital Transmission 221 5.4 Digital Transmission of Analog Signals 231 5.5 Time Division Multiplexing 241 5.6 Packets, Frames, and Protocols 243 5.7 Error Control 246 5.8 Summary 264 Exercises 266 References 269 6 Modulation and Multiple Access 271 6.1 Introduction 271 6.2 Digital Modulation 273 6.3 Multiple Access 287 6.4 Frequency Division Multiple Access (FDMA) 291 6.5 Time Division Multiple Access (TDMA) 308 6.6 Synchronization in TDMA Networks 317 6.7 Transmitter Power in TDMA Networks 319 6.8 Star and Mesh Networks 323 6.9 Onboard Processing 324 6.10 Demand Assignment Multiple Access (DAMA) 329 6.11 Random Access (RA) 333 6.12 Packet Radio Systems and Protocols 334 6.13 Code Division Multiple Access (CDMA) 337 6.14 Summary 348 Exercises 349 References 352 7 Propagation Effects and Their Impact on Satellite-Earth Links 355 7.1 Introduction 355 7.2 Propagation Phenomena 358 7.3 Quantifying Attenuation and Depolarization 359 7.4 Propagation Effects That are Not Associated with Hydrometeors 367 7.5 Rain and Ice Effects 372 7.6 Prediction of Rain Attenuation 380 7.7 Prediction of XPD 390 7.8 Propagation Impairment Countermeasures 399 7.9 Summary 404 Exercises 405 References 408 8 Low Throughput Systems and Small Satellites 411 8.1 Introduction 411 8.2 Small Satellites 413 8.3 Operational Use of SmallSats 436 8.4 Low Throughput Mobile Communications Satellite Systems 440 8.5 VSAT Systems 444 8.6 Signal Formats 461 8.7 System Aspects 469 8.8 Time Over Coverage 470 8.9 Orbital Debris 471 8.10 Summary 472 Exercises 473 References 475 9 NGSO Satellite Systems 481 9.1 Introduction 481 9.2 Orbit Considerations 485 9.3 Coverage and Frequency Considerations 501 9.4 System Considerations 523 9.5 Operational and Proposed NGSO Constellation Designs 526 9.6 System Design Example 534 9.7 Summary 535 Exercises 537 References 539 10 Direct Broadcast Satellite Television and Radio 543 10.1 C-Band and Ku-Band Home Satellite TV 545 10.2 Digital DBS-TV 545 10.3 DVB-S and DVB-S2 Standards 556 10.4 DBS-TV System Design 569 10.5 DBS-TV Link Budget for DVB-S and DVB-S2 Receivers 572 10.6 Second Generation DBS-TV Satellite Systems Using DVB-S2 Signal Format 575 10.7 Master Control Station and Uplink 576 10.8 Installation of DBS-TV Antennas 577 10.9 Satellite Radio Broadcasting 578 10.10 Summary 583 Exercises 584 References 586 11 Satellite Internet 589 11.1 History of Satellite Internet Access 589 11.2 Geostationary Satellite Internet Access 592 11.3 NGSO Satellite Systems 604 11.4 Link Budgets for NGSO Systems 613 11.5 Packets and Protocols for NGSO Systems 618 11.6 Gateways, User Terminals, and Onboard Processing Satellites 622 11.7 Total Capacity of OneWeb and SpaceX Proposed NGSO Constellations 625 11.8 End of Life Disposal of NGSO Satellites 625 11.9 Comparison of Spot Beam Coverage of GSO and LEO Internet Access Satellites 626 11.10 User Terminal Antennas for Ku-Band, Ka-Band, and V-Band 627 11.11 Summary 628 Exercises 629 References 629 12 Satellite Navigation and the Global Positioning System 633 12.1 The Global Positioning System 634 12.2 Radio and Satellite Navigation 637 12.3 GPS Position Location Principles 640 12.4 GPS Codes and Frequencies 644 12.5 Satellite Signal Acquisition 648 12.6 GPS Signal Levels 658 12.7 GPS Navigation Message 662 12.8 GPS C/A Code Standard Positioning System Accuracy 663 12.9 Differential GPS 667 12.10 Denial of Service: Jamming and Spoofing 669 12.11 ADS-B and Air Traffic Control 672 12.12 GPS Modernization 673 12.13 Summary 675 Exercises 676 References 677 Glossary 681 Appendix A Decibels in Communications Engineering 691 Appendix B Antennas 695 Appendix C Complementary Error Function erfc(x) and Q FunctionQ(z) 715 Appendix D Digital Transmission of Analog Signals 719 Index 731
Trade Policy 买家须知
- 关于产品:
- ● 正版保障:本网站隶属于中国国际图书贸易集团公司,确保所有图书都是100%正版。
- ● 环保纸张:进口图书大多使用的都是环保轻型张,颜色偏黄,重量比较轻。
- ● 毛边版:即书翻页的地方,故意做成了参差不齐的样子,一般为精装版,更具收藏价值。
关于退换货:
- 由于预订产品的特殊性,采购订单正式发订后,买方不得无故取消全部或部分产品的订购。
- 由于进口图书的特殊性,发生以下情况的,请直接拒收货物,由快递返回:
- ● 外包装破损/发错货/少发货/图书外观破损/图书配件不全(例如:光盘等)
并请在工作日通过电话400-008-1110联系我们。
- 签收后,如发生以下情况,请在签收后的5个工作日内联系客服办理退换货:
- ● 缺页/错页/错印/脱线
关于发货时间:
- 一般情况下:
- ●【现货】 下单后48小时内由北京(库房)发出快递。
- ●【预订】【预售】下单后国外发货,到货时间预计5-8周左右,店铺默认中通快递,如需顺丰快递邮费到付。
- ● 需要开具发票的客户,发货时间可能在上述基础上再延后1-2个工作日(紧急发票需求,请联系010-68433105/3213);
- ● 如遇其他特殊原因,对发货时间有影响的,我们会第一时间在网站公告,敬请留意。
关于到货时间:
- 由于进口图书入境入库后,都是委托第三方快递发货,所以我们只能保证在规定时间内发出,但无法为您保证确切的到货时间。
- ● 主要城市一般2-4天
- ● 偏远地区一般4-7天
关于接听咨询电话的时间:
- 010-68433105/3213正常接听咨询电话的时间为:周一至周五上午8:30~下午5:00,周六、日及法定节假日休息,将无法接听来电,敬请谅解。
- 其它时间您也可以通过邮件联系我们:customer@readgo.cn,工作日会优先处理。
关于快递:
- ● 已付款订单:主要由中通、宅急送负责派送,订单进度查询请拨打010-68433105/3213。
本书暂无推荐
本书暂无推荐