Gliederung der Vorlesung:
1. Einführung: Überblick über die Hauptkomponenten, Satelliten, Anwendungen und Dienste, sowie Orbits, Aufgaben und Frequenzen der Satellitennetzwerke
2. Historie der Satellitenkommunikation: Wichtige Meilensteine, Entwicklung in Europa und Deutschland
3. Orbits und Konstellationen: Keplersche Gesetze, Beschreibung von Orbits, verwendete Umlaufbahnen, Bodenspuren, erreichbare Abdeckung
4. Trägersysteme: Trägerraketen, Entwicklung, Anbietermarkt, Nutzlastfähigkeit, Startplätze, Startverlauf
5. Satellitenaufbau: Auswahl aktueller Satellitenplattformen, Satellitenaufbau, Plattformkomponenten, Montageschritte und Tests
6. Satellitennutzlast (Payload): Komponenten, Industrielle Beispiele, Aufbau und Aufgaben der Payload, Transponderarchitekturen, Antennen
7. Signalausbreitung und Leistungsbilanz: Signalausbreitung, Freiraumverluste, Signaldämpfung, Rauschen, Signal-Rausch-Verhältnis, Linkbudget
8. Weltraumumgebung: Weltraumumgebungsbedingungen, Einflüsse auf den Satelliten und die Elektronik der Nutzlast
9. Quellencodierung: Audio-, Bild- und Videokompression – das Content des Satellitenfernsehens
10. Signalmodulation und Kanalcodierung: Signalkonstellationen, Modulation und Codes zur Fehlerkorrektur
11. Diversitäts- und Zugriffsverfahren: Medium Access, Duplextechniken, Multiplexmethoden, Diversitätstechniken
12. Moderne Satellitenkommunikationssysteme: Rundfunksysteme wie Sirius XM Satellite Radio, zellulare Internetversorgung mittels Satellitenkommunikation
13. Neueste Themen aus Forschung und Entwicklung

SatKom auf StudOn: http://www.studon.uni-erlangen.de/crs117969.html

Title:

Satellite Communications

Credits: 5

Prerequisites

Virtual offer Videos about lectures and tutorials will be available via StudOn portal. The StudOn password to access the course material will be sent by email to students who subscribed for this lecture via MeinCampus. For some study programs, MeinCampus does not allow for subscription. In this case, please contact the lecturer directly via email.
Online Q&A At start of the semester, there will be a poll in order to identify suitable time slots for online Q&A, where questions about lecture content and organization can be posed. Resulting information of general interest to all will also be put on the StudOn-page for later look-up.

Contents

After a historical retrospective about the developments in satellite communication, the core components of a typical satellite system (ground- and space-segment) are introduced. The principles and architectures of rockets/ carriers, satellites (platform, subsystems, payload), used orbits, and the various communication links (uplink, downlink, inter-satellite-link) are shown. The special features and properties of signal transmission over such large distances are explained and stuffed with examples. In particular, more details are provided on the used frequencies, signal dispersion and attenuation, atmospheric effects as well as impairments due to space environment. The architecture of transparent and regenerative communication payloads are described in detail, accompanied by corresponding examples of commercially used transponders and onboard-processors and their technology. The principles of modern standardized methods for signal transmission and preparation of video-/image- and audio-signals via satellite, e.g., MPEG, H.264/265, DVB-S/-S2/-S2X, are illustrated and discussed. This includes methods for efficient source coding, channel coding and modulation, channel access and diversity schemes. Furthermore, the currently available communication satellites in orbit and the related variety of commercial services are introduced like, e.g., TV- and broadband services as well as mobile communication services and systems. Based on that, a few challenges and perspectives for research and development for future satellite systems are highlighted with respect to the upcoming new mega constellations and next generation high throughput satellites (HTS). The physical, electro-technical and communications concepts and schemes shown in the lectures are complemented by tutorials with sample calculations.

Table of contents:
1. Introduction: Overview of main components, satellites, applications and services, orbits, tasks, frequencies, satellite networks
2. History of satellite communications: Major milestones, development in Europe and Germany
3. Orbits and constellations: Kepler's laws, description of orbits, orbits used, ground tracks, achievable coverage
4. Launcher systems: Launch vehicles, providers, payload capabilities, launch sites, launch history
5. Satellite structure: Selection of current satellite platforms, satellite structure, platform components, assembly steps and tests
6. Payload: Components, structure and tasks of payload, transponder architecture, antennas
7. Signal propagation and link budget: Signal propagation, free space losses, signal attenuation, noise, signal to noise ratio, link budget
8. Space environment: Space environmental conditions, influences on the satellites and payload electronics
9. Source coding: Audio, image and video compression - the satellite TV broadcasting content
10. Signal modulation and channel coding: Signal constellations, modulation and error correction coding
11. Diversity and access schemes: Medium access, duplex methods, multiplex methods, diversity techniques
12. Modern satellite communications systems: Broadcasting systems like Sirius XM Satellite Radio, satellite cellular broadband communication
13. Latest topics in research and development

UE: Übung Satellitenkommunikation

Dozent/in: Marcelo Michael, M. Sc.
Zeit und Ort: Mi 10:15 - 11:45, H5
www: http://www.like.tf.fau.de