Line of Sight Communication Diagram

This diagram clearly illustrates three common scenarios of wireless signal propagation: Line of Sight (LOS), Near Line of Sight (nLOS), and Non Line of Sight (NLOS). It visually explains how obstacles, particularly trees, impact the critical Fresnel Zone and the direct 'line of sight' path between two communication points. The top section shows a perfect LOS connection with an unobstructed Fresnel Zone. The middle section depicts an nLOS situation where an object partially intrudes into the Fresnel Zone, potentially degrading signal quality. The bottom section demonstrates an NLOS scenario where a significant obstruction completely blocks the direct path, forcing the signal to diffract or reflect, leading to a weaker or interrupted connection. It's a helpful visual guide for understanding radio wave behavior in different environments.

line of sight - near line of sight - non line of sight - fresnel zone - wireless - communication - radio waves - signal path - obstruction