KERALA UNIVERSITY Class 8 satellite communication Question Paper 2019

Practice authentic previous year questions for better exam preparation.

Sample Questions

(a) The orbit of an earth-orbiting satellite has an eccentricity of 0.15 and a semi major axis of 9000 km . Determine (i) its periodic time (ii) the apogee height (iii) the perigee height. Assume the mean radius of the earth to be 6371 km . ( $\mathb...
(b) Outline the principle of Sun-synchronous orbits and Molniya orbits. What are the uses of Molniya orbits?
(a) Draw the reliability model of a communication satellite and show that the reliability $R$ is given by, $$ R=1-\left(1-e^{\lambda t}\right)^{i} $$ where $1 / \lambda$ is the mean time between failures.
(a) The earth to satellite path affects radio waves in several ways. Explain the role of propagation effects on the design of a satellite communication link. 10
(b) Explain attenuation for transmission caused by rain. Derive an expression for rain attenuation in decibels.