LECTURE NOTES ON SATELLITE COMMUNICATION IV B. Tech II semester (JNTUH-R13) Mr. C Srihari, Asst. Professor Ms. G Bhavana, Asst. Professor ELECTRONICS AND COMMUNICATION ENGINEERING INSTITUTE OF AERONAUTICAL ENGINEERING (AUTONOMOUS) DUNDIGAL, HYDERABAD - 500 043
Syllabus: 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, I I &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 lonospeheric Scintillation and Low angle fading, Rain induced attenuation, rain induced cross polarization interference.
Multiple Access: Frequency DivisIon Multiple Access (FDMA) – Intermodujation 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 POItIlg 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: MI G/i Queue, Message Transmission by TDMA, PURE ALOHA-Satellite Packet Switching, Slotted Aloha, Packet Reservation, Tree Algorithm. TEXT BOOKS Satellite Communications —Timothy Pratt, Charles Bostian, Jeremy Allnutt, 2nd Edition, 2003, John Wiley & Sons. Satellite Communications Engineering — Wilbur, L. Pritchand, Robert A. Nelson and Heuri G. Suyderhoud, 2nd Ed., Pearson Publications. Digital Satellite Communjcatjons..Trj–Ha 2nd Edition, 1990, Mc.Graw Hill. REFERENCE BOOKS Satellite Communications Dennjs Roddy, 2nd Edition, 1996, McGraw Hill. Satellite Communications: Design Principles — M. Richcharia, 2nd Ed., BSP, 2003. Digital Satellite Communications — Tn. T. Ha, 2nd Ed., MGH, 1990. Fundamentals of Satellite Communications — K. N. Raja Rao, PHI, 2004.Course Outcomes UNIT I SATELLITE ORBITS 1 Introduction to satellite communication: Kepler’s laws: Kepler’s law Introduction: Kepler’s First Law: Kepler’s Second Law : Newton’s law: Newton's first law: Newton's second law: Newton's first law: 1-22 1 2 3
Orbital parameters: Orbital Perturbations: Effects of non-Spherical Earth: Atmospheric Drag: Station Keeping: Geo stationary and Non Geo-stationary orbits: Geo stationary: Non Geo-Stationary Orbit: Look Angle Determination: 1.9. Limits of visibility: Eclipse: Sub satellite Point: Sun Transit Outage: Launching Procedures: Introduction: Orbit Transfer: Launch vehicles and propulsion: Transfer Orbit: UNIT II SPACE SEGMENT & SATELLITE LINK DESIGN Spacecraft Technology- Structure: The Power Supply: Attitude Control & Orbit Control: Spinning satellite stabilization: Momentum wheel stabilization Thermal Control and Propulsion: Communication Payload & Support Subsystems: TT&C Subsystem Transponders: The wideband receiver The input demultiplexer The power ampliﬁer Satellite uplink and downlink Analysis and Design: Introduction Equivalent Isotropic Radiated Power Transmission Losses The Link-Power Budget Equation: Ampliﬁer noise temperature The Uplink Downlink Inter modulation and interference: Propagation Characteristics and Frequency considerations: Introduction Radio Noise System reliability and design lifetime: System reliability: 2.14.2. Design lifetime: UNIT III SATELLITE ACCESS Modulation and Multiplexing: Voice, Data, Video: Voice, Data, Video: Modulation And Multiplexing: 4 6 7 8 11 12 13 14 15 18 19 23-50 23 24 25 26 27 31 41 43 44 45 46 48 48 49 51-72 51