![]() ![]() Line of sight is a vital factor in wireless communication. Eventually it will disappear over the horizon and break the LOS. As two objects get further apart, the earth will obstruct the LOS between them. The curvature of the earth has been the limiting factor of lines of sight. If he lit a signal fire, everyone in the area would have a clear line of sight to see the fire and raise the alarm. His high-up position would give him an unobstructed view, or clear lines of sight across a large area. The concept of lines of sight have been important for much of history. ![]() ![]() If an object were blocking the view, it would be considered out of sight or an obstructed line of sight. It's called the "line of sight" because if a person was standing at one point, the LOS would be the path they look along. Line of sight is the direct path between two points. A clear line of sight is important to high-speed communication. In communication, line of sight is the direct path from a transmitter to the receiver and the obstructions that may fall in that path. Line of sight (LOS) is the imaginary line between an observer and the target. ![]()
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