SATELLITE COMMUNICATION
EX 725 02
Course Objectives:
- To enable the student to become familiar with satellites and satellite services
- To get an overview of satellite systems in relation to other terrestrial systems
- To study about satellite orbits, launching, link design, multiple access techniques, propagation effects and their impact on satellite-earth links
- To study about VSAT systems, Satellite TV, radio and GPS
- Overview of satellite communication (2 hours)
- Introduction
- Frequency Allocations for Satellite Services
- Intelsat
- U.S.Domsats
- Polar Orbiting Satellites
- Orbital mechanics and launchers (10 hours)
- Kepler’s laws
- Newton’s law
- Orbital parameters
- Orbital Mechanics
- Look Angle Determination
- Orbital perturbations
- Orbit Control system
- Geo stationary orbit
- Telemetry, tracking, Command and monitoring
- Power systems
- Communication subsystems
- Transponders
- Satellite Antennas
- Equipment reliability and space qualification.
- Satellite link design (9 hours)
- Basic transmission Theory,
- System noise temperature and G/T ratio,
- Design of downlinks,
- Satellite systems using small earth stations Uplink design,
- Design for C/N:Combining C/N and C/I values in satellite links,
- System design examples
- Multiple access techniques for satellite links (4 hours)
- Multiple access
- Frequency Division Multiple Access
- Time Division Multiple Access
- On board processing
- Demand access Multiple Access
- Random access
- Code division Multiple Access
- Propagation effects and their impact on satellite-earth links (3 hours)
- Quantifying attenuation and depolarization
- Propagation effects that are not associated with hydrometers
- Rain and ice effects
- Prediction of rain attenuation
- Prediction of XPD
- Propagation impairment Countermeasures
- VSAT systems (4 hours)
- Network architectures
- Access control protocol
- Basic techniques
- SAT earth station engineering
- Calculation of link margins for VSAT star network
- System design procedures
- Low Earth Orbit and Non-Geostationary Satellite systems(4 hours)
- Orbit considerations
- Coverage and frequency considerations
- Delay and throughput considerations
- Operational NGSO constellation design
- Introduction to Satellite mobile network
- Meteorological Satellites System
- Direct broadcast Satellite TV and radio (4 hours)
- C-Band and Ku band home satellite TV
- Digital DBS–TV
- DBS–TV system design
- DBS–TV link budget
- Error control in digital DBS TV
- DBS –TV link budget
- Master control station and uplink
- Establishment of DBS–TV antennas Satellite radio broadcasting
- Satellite Navigation and Global Positioning System (5 hours)
- Radio and Satellite navigation
- GPS position location principles
- GPS receivers and Codes
- Satellite signal acquisition
- GPS navigation message
- GPS signal levels
- Timing accuracy
- GPS receiver operation
Practical/ Field visits
Field visits to Satellite Stations.
References:
- Timothy Pratt, Charles Bostian and Jeremy Allnutt,“Satellite Communications”, John Willy & Sons (Asia) Pvt. Ltd.
- Dennis Roddy, “Satellite Communications”, McGraw-Hill Publication.
- James Martyn, “Communication Satellite systems”, Prentice Hall.
- Wilbur L. Pritchard, Hendri G. Suyderhoud and Robert A. Nelson, “SatelliteCommunication Systems Engineering”, Prentice Hall/Pearson.
- M.Richharia, “Satellite Communication Systems-Design Principles”,Macmillan.
- Emanuel Fthenakis, “Manual of Satellite Communications”, McGraw Hill Book Co.
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