Assignment:
A communicator intends to use frequency hopping at a hop rate of 10.000 hops/s to avoid a threat of repeat-back jamming.
(a) Ignoring the curvature of the earth and assuming that the communicator is transmitting to a satellite of geosynchronous altitude (approximately 36.000 km) that is directly overhead, compute the radius of vulnerability, which is the radius outside of which the communicator is unconditionally safe from repeat-back jamming by a ground-based jammer.
(b) If the communicator knows that the jammer requires a minimum of 10 us to identify the transmission frequency and tune the jammer output. compute the radius of vulnerability conditioned on this information.
Provide complete and step by step solution for the question and show calculations and use formulas.