Engineering Tutorials

EE-404-E SATELLITE COMMUNICATION

CLASS WORK : 50
EXAM : 100

UNIT1. PRINCIPLES OF SATELLITE COMMUNICATION :

Evolution & growth of communication satellite, Synchronous satellite, Satellite frequency allocation & Band spectrum, Advantages of satellite communication, Active & Passive satellite, Modem & Codec. Applications of satellite communication.

UNIT2. COMMUNICATION SATELLITE LINK DESIGN:

Introduction, General link design equations, System noise temperature, C/N & G/T ratio, Atmospheric & Ionospheric effects on link design, Complete link design, Earth station parameters.

UNIT3. ANALOG SATELLITE COMMUNICATION :

Introduction, Baseband analog(Voice) signal, FDM techniques, S/N & C/N ratio in frequency modulation in satellite link, S/N ratio in FM with multiplexed telephone signal in satellite link, Single channel per carrier(SCPC) systems, Companded single sideband (CSSB) systems, Analog FM/FDM TV satellite link, Intermodulation products & their effects in FM/FDM systems, Energy disposal in FM/FDM systems.

UNIT4. DIGITAL SATELLITE COMMUNICATION :

Advantages of digital communication, Elements of digital satellite communication systems, Digital baseband signals, Digital modulation techniques, Satellite digital link design, Time Division Multiplexing.

UNIT5. MULTIPLE ACCESS TECHNIQUES:

Introduction, TDMA, TDMA-Frame structure, TDMA-Burst structure, TDMA-Frame efficiency, TDMA-superframe, TDMA-Frame acquisition & Synchronization, TDMA compared to FDMA, TDMA Burst Time Plan, Multiple Beam ( Satellite switched) TDMA satellite system, Beam Hopping(Transponder Hopping) TDMA, CDMA & hybrid access techniques.

UNIT6. SATELLITE ORBITS:

Introduction, Synchronous orbit, Orbital parameters, Satellite location with respect to earth, Look angles, Earth coverage & slant range, Eclipse effect, Satellite placement in geostationary orbit, station keeping, Satellite stabilization.

UNIT7. SPECIAL PURPOSE COMMUNICATION SATELLITES :

BDS, INMARSAT, INTELSAT, VSAT(data broadband satellite), MSAT( Mobile Satellite Communication technique), Sarsat( Search & Rescue satellite) & LEOs (Lower earth orbit satellite), Satellite communication with respect to Fiber Optic Communication, LANDSAT, Defense satellite.

UNIT8. LASER SATELLITE COMMUNICATION:

Introduction, Link analysis, Optical satellite link transmitter, Optical satellite link receiver, Satellite Beam Acquisition, Tracking & Positioning, Deep Space Optical Communication Link.

TEXT BOOK:

1. Satellite Communication : D.C. Aggarwal ; Khanna.

REFERENCE BOOK :

1. Satellite Communication :Gagliardi ; CBS

NOTE: Eight questions are to be set – one question from each unit. Students have to attempt any five question.

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