Define: Prograde orbit, retrograde orbit, Mean anomaly
[3 marks]Define: True anomaly, Argument of perigee, Apogee, Perigee
[4 marks]Describe: (1) Kepler’s first law with figure. (2) Kepler’s Second law with figure.
[7 marks]Describe Kepler’s Third law.
[3 marks]Define: (1) Ascending node. (2) Descending node (3) Line of Nodes (4) Inclination
[4 marks]Describe: Feeder losses and antenna misalignment losses with figures.
[7 marks]Explain preassigned FDMA in detail.
[7 marks]What are the conditions required for an orbit to be geostationary?
[3 marks]Show the table containing different frequency bands (used with satellite communication) along with Band designation.
[4 marks]Describe Noise temperature of absorptive networks and show that the noise f a c t o r of a lossy network is equal to its power loss.
[7 marks]Define: equivalent isotropic radiated power.
[3 marks]Explain the term: Station keeping.
[4 marks]With diagram Explain the overall system noise temperature and write its equation. Also derive the equation for carrier to Noise ratio.
[7 marks]Explain sun Transit outage.
[3 marks]Calculate the apogee and Perigee heights for the orbital parameters e=0.0011501, a=7192.335 km and mean earth radius=6371 km.
[4 marks]Draw the complete satellite circuit which includes combined uplink and downlink. Derive the equation for combined Noise-to-carrier ratio N /C.0
[7 marks]Calculate the radius of a circular orbit for which the period is one day.
[3 marks]What are the advantages of satellite communication systems? (2)
[4 marks]The apogee and perigee distance of a satellite orbiting in an elliptical orbit are respectively 45000 km and 7000 km.Determine the following: (1) Semi-major axis of the elliptical orbit. (2) Orbital eccentricity1 (3) Distance between the center of the earth and the center of elliptical orbit.
[7 marks]Define Direct sequence Spread Spectrum.
[3 marks]Explain Preassigned TDMA with diagram.
[4 marks]Explain satellite switched TDMA with diagram.
[7 marks]Explain the space segment.
[3 marks]With diagram explain the function of basic CDMA system.
[4 marks]Illustrate the basic TDMA concept in which the stations transmit bursts in sequence. Draw necessary figures.
[7 marks]