Satellite Communication(ECT422)

Program : Electronics and Communication Technology          Name of the Teacher: Mr. K. B. Dalavi.

Class:  Final year B.Tech                                                                     Course : Satellite Communication           

Semester: VIII                                                                                         No. of Lectures per week: 3

Prerequisites: Microwave Engineering, Antenna and Radar Engineering

 Course Outcomes :

At the end of the course the students should be able to:

CO409.1 : Explain basic satellite system and different orbital parameters.
CO409.2 : Determine antenna look angles and range for GEO.
CO409.3 : Estimate different types of losses and classify antennas used for satellite             
CO409.4 : Evaluate Power link budget for satellite
CO409.5 : Analyze different satellite networks with respect to bandwidth, mode and protocol.
CO409.6 :  Illustrate applications of satellite communication such as DBS, VSAT and GPS.

Curriculum Content :

UNIT- I Introduction to Satellite Systems (6 Hrs) Introduction, Frequency Allocations, Satellite services, Polar Orbiting Satellites, Kepler’s Laws, Orbital Elements, Orbit Perturbations, Inclined Orbits, Local Mean Solar Time and SunSynchronous Orbits.
UNIT- II Geostationary Satellite (4 Hrs) Introduction, Antenna Look Angles determinations, Limits of Visibility, Earth Eclipse of Satellite, Sun Transit Outage.
UNIT- III Wave Propagation and Antennas (8 Hrs) Introduction, Atmospheric Losses, Ionospheric Effects, Rain Attenuation, Introduction, Isotropic Radiator and Antenna Gain, Radiation Pattern, Beam Solid Angle and Directivity, Effective Aperture, Half-Wave Dipole, Aperture Antennas, Horn Antennas Parabolic Reflector, Arrays, Array Switching, Analog and digital signals used in Satellite communication. Error control coding
UNIT- IV Satellite Link Design (5 Hrs) Introduction, transmission losses, link power budget equation, system Noise, carrier to noise ratio for uplink and downlink, combined uplink and downlink carrier to noise ratio, inter modulation noise
UNIT- V Satellite Networks (5 Hrs) Bandwidth, Asynchronous Transfer Mode (ATM), ATM layers and Interface, ATM over Satellite, Internet, Internet Layers, The TCP Link, Enhancing TCP Over Satellite Channels, Split TCP Connections, Asymmetric Channels.
UNIT- VI DBS System (8 Hrs) Orbital Spacing, Power Rating and Number of Transponders, Frequencies and Polarization, Transponder Capacity, Bit Rates for Digital Television, MPEG Compression Standards, Forward Error Correction (FEC), Home Receiver Outdoor Unit (ODU), Home Receiver Indoor Unit (IDU), Downlink Analysis, Uplink. Satellite Mobile and Specialized Services:Introduction, Satellite Mobile Services, VSATs, Radarsat, Global Positioning Satellite System (GPS), Orbcomm, Iridium.
Text Books: 1. Satellite Communications - Dennis Roddy - 3rd edition, Mc-Graw Hill Publication
Reference Books: 1. Satellite Communications systems - M. Richharia - 2nd edition Mc Millan publication