Line-of-sight Propagation

In the maritime context, line-of-sight propagation refers to the transmission and reception of electromagnetic waves, primarily radio waves, that travel directly from the transmitting antenna to the receiving antenna. This mode of propagation is predominant in VHF (Very High Frequency) and UHF (Ultra High Frequency) bands, which are commonly used in maritime communications. The effectiveness of line-of-sight propagation is largely dependent on the height of the antennas; the higher the antennas, the greater the line-of-sight distance. This is particularly important in maritime settings where communication between vessels, or between a vessel and a shore station, is crucial for navigation, safety, and operational efficiency. However, line-of-sight propagation in maritime environments can be affected by various factors such as atmospheric conditions, the curvature of the Earth, and obstacles like mountains or tall buildings. To overcome these challenges, maritime communication systems often employ techniques such as increasing antenna height, using repeater stations, or utilizing satellite communication systems.