JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Communication Satellite: Orbit and Description: A Brief history of satellite Communication, Satellite Frequency Bands, Satellite Systems, Applications, Orbital Period and Velocity, effects of Orbital Inclination, Azimuth and Elevation, Coverage angle and slant Range, Eclipse, Orbital Perturbations, Placement of a Satellite in a Geo-Stationary orbit.

UNIT - II

Satellite Sub-Systems: Attitude and Orbit Control system, TT&C subsystem, Attitude Control subsystem, Power systems, Communication subsystems, Satellite Antenna Equipment. Satellite Link: Basic Transmission Theory, System Noise Temperature and G/T ratio, Basic Link Analysis, Interference Analysis, Design of satellite Links for a specified C/N, (With and without frequency Re-use), Link Budget.

UNIT - III

Propagation Effects: Introduction, Atmospheric Absorption, Cloud Attenuation, Tropospheric and Ionospeheric Scintillation and Low angle fading, Rain induced attenuation, rain induced cross polarization interference. Multiple Access: Frequency Division Multiple Access (FDMA) - Intermodulation, Calculation of C/N, Time Division Multiple Access (TDMA) - Frame Structure, Burst Structure, Satellite Switched TDMA, On-board Processing, Demand Assignment Multiple Access (DAMA) – Types of Demand Assignment, Characteristics, CDMA Spread Spectrum Transmission and Reception.

UNIT - IV

Earth Station Technology: Transmitters, Receivers, Antennas, Tracking Systems, Terrestrial Interface, Power Test Methods, Lower Orbit Considerations. Satellite Navigation and Global Positioning Systems: Radio and Satellite Navigation, GPS Position, Location Principles, GPS Receivers, GPS C/A Code, Accuracy, Differential GPS.

UNIT - V

Satellite Packet Communications: Message Transmission by FDMA: M/G/1 Queue, Message Transmission by TDMA, PURE ALOHA-Satellite Packet Switching, Slotted ALOHA, Packet Reservation, Tree Algorithm.

TEXT BOOKS:

nd

• 1. Timothy Pratt, Charles Bostian, Jeremy Allnutt, “Satellite Communications”, 2 Edition, 2003, John Wiley & Sons.
• 2. Wilbur, L. Pritchand, Robert A. Nelson and Heuri G. Suyderhoud, “Satellite Communications nd Engineering”, 2 Edition, Pearson Publications.
• 3. Tri.T.Ha, “Digital Satellite Communications”, 2nd Edition, 1990, Mc .Graw Hill.

REFERENCE BOOKS:

• 1. Dennis Roddy, “Satellite Communications”, 2nd Edition, 1996, McGraw Hill.
• 2. M. Richcharia, “Satellite Communications: Design Principles”, 2nd Edition, BSP, 2003.
• 3. Tri. T. Ha, “Digital Satellite Communications”, 2nd Edition, MGH, 1990.
• 4. K. N. Raja Rao, “Fundamentals of Satellite Communications”, PHI, 2004.