Laser Communication. A laser communication system depends

Chapter 7, Problem 115

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Laser Communication. A laser communication system depends on a narrow beam, and a direct line of sight is necessary for communication links. If a transmitter/ receiver for a laser system is placed between two buildings (see the gure) and the other end of the system is located on a low-earth-orbit satellite, then the link is operational only when the satellite and the ground system have a line of sight (when the buildings are not in the way). Find the angle that corresponds to the system being operational (i.e., nd the maximum value of that permits the system to be operational). Express in terms of inverse tangent functions and the distance from the shorter building.