Satellite teleinformation networks

The book is devoted to the analysis of technical solutions that enable the provision of such services to a mass audience anywhere on the globe and with the quality appropriate for a given service. Issues related to orbits and communication on the surface of the whole Earth were described, which is possible due to the use of constellations of satellites. Issues regarding the energy balance of the satellite link as well as the modulation and demodulation of the signal are presented. There are ways of implementing multimedia services that requires proper control of data flow and application of appropriate transmission protocols. Issues related to the effective service of many millions of subscribers, made possible by the use of appropriate mechanisms of multiplexing the link and access. The technical aspects of the operation of the VSAT network were also presented as well as systems for free data transmission, for transferring IP traffic, for the provision of telephone services, and broadband multimedia services. Also described are the systems provided by one of the oldest satellite communication companies, namely Inmarsat, and in particular systems increasing the safety of sea and air navigation. The possibilities of using so-called stratospheric platforms. The great advantage of the book is that in addition to the theoretical basis, the Reader will find a richly illustrated description of many technical solutions and a discussion of the properties of various contemporary satellite systems. The book is addressed primarily to students of electronics and telecommunications at technical universities, as well as all interested in satellite communications, both professionals and amateurs.

Table of Contents

LIST OF SHORTCUTS
1. INTRODUCTION

2. ORBITES OF ARTIFICIAL EARTH SATELLITES
2.1. Kepler's laws
2.2. Elements of the orbit
2.3. The shape of the orbit
2.4. The position of the satellite in orbit
2.5. The evolution of elements of orbits
2.6. Summary

3. ENSURING SATELLITE CONNECTION
3.1. Coverage
3.2. Visibility
3.3. Multi-beam antennas
3.4. Propagation delay
3.5. Doppler effect
3.6. Frequencies used in satellite communications
3.7. Summary

4. SATELITE CONSTELLATIONS
4.1. Types of constellations
4.2. Synchronous orbit with the sun
4.3. Constellation of the rosette
4.4. Examples of a rosette constellation
4.5. Summary

5. ENERGY BALANCE
5.1. Introduction
5.2. Noise and interference on the satellite link
5.3. The resultant ratio of signal power to noise power
5.4. Summary

6. MODULATION AND DEMODULATION OF THE DIGITAL SIGNAL
6.1. Digital modulation
6.2. Demodulation of a digital signal
6.3. Efficiency of spectrum use
6.4. Synchronization
6.5. Protective coding
6.6. Advanced modulation and coding methods in satellite links
6.7. Summary

7. INTERNAL PROTOCOLS OF THE SATELLITE SYSTEM
7.1. Error control
7.2. Data flow control by a moving window
7.3. Polling
7.4. VSAT networks and the SNA network
7.5. Interfaces of multi-point synchronous protocols
7.6. SDLC protocol
7.7. BISYNC protocol
7.8. Summary

8. MULTIPLE ACCESS
8.1. Methods of multiplying access
8.2. Multiple access systems
8.3. Multiple access protocols used in VSAT networks
8.4. Protocols with fixed access assignment
8.5. Protocols with competitive access
8.6. Protocols with booking access
8.7. Analysis of the work of the link with the Aloha protocol
8.8. Comparison of transmission protocols used in VSAT systems
8.9. Properties of various access protocols - simulation results
8.10. Summary

9. VSAT SATELLITE SYSTEMS
9.1. Requirements and legal conditions for VSAT systems
9.2. Topology of the VSAT network
9.3. Skystar Plus system
9.4. New technical solutions in VSAT systems
9.5. 5IF Infinity system from iDirect Technologies
9.6. Hughes HX100 system
9.7. Summary

10. SATELLITE NETWORKS FOR FREE DATA TRANSMISSION
10.1. Orbcomm system
10.2. Leo One system
10.3. Comparison of systems
10.4. Vehicle position monitoring using satellite systems
10.5. Summary

11. SATELLITE NETWORKS INTENDED FOR PROVIDING TELEPHONE SERVICES
11.1. Networks using non-stationary satellites
11.2. Networks using geostationary satellites
11.3. Satellite mobile telephony systems
11.4. Summary

12. SATELLITE NETWORKS FOR MOVING THE MOVEMENT OF IP
12.1. Introduction
12.2. The role of satellite IP network
12.3. Return channel for IP
12.4. Summary

13. BROADBAND MASTER NETWORKS
13.1. Access to multimedia services
13.2. Systems architecture
13.3. Frequency range for broadband satellite networks
13.4. Applied protocols, transmission platforms
13.5. Geostationary broadband access systems
13.6. Systems (in which geostationary satellites are used) for communication with airplanes
13.7. Global satellite broadband access systems
13.8. Summary

14. SYSTEMS AND SERVICES OFFERED BY INMARSAT
14.1. Inmarsat A and B
14.2. Inmarsat C
14.3. Inmarsat M and Mini-M
14.4. Services provided by the Inmarsat system
14.5. Summary

15. STRATEGY PLATFORMS

16. LITERATURE

INDEX