Satelliitühendused

Satelliitühendused, also known as satellite communication, refers to the use of artificial satellites to relay radio signals over long distances. This technology enables communication across vast geographical areas, including remote regions where terrestrial infrastructure like fiber optic cables or cellular towers is not feasible or cost-effective. Satellites are typically placed in geostationary orbit, geosynchronous orbit, or low Earth orbit, each offering different advantages for communication latency and coverage.

The fundamental principle of satellite communication involves a ground station transmitting a signal to a satellite, which then amplifies and re-transmits the signal back to one or more other ground stations. These ground stations, often referred to as VSAT (Very Small Aperture Terminal) terminals, consist of an antenna and a modem. Satellites act as repeaters in space, bridging the gap between distant points on Earth.

Satelliitühendused are utilized in a wide array of applications. These include providing internet access to underserved areas, enabling television broadcasting to millions of households, facilitating mobile phone communication in remote locations, supporting global positioning systems (GPS), and facilitating critical communication for military operations, disaster relief efforts, and maritime vessels. The development of satellite technology continues to improve data speeds, reduce latency, and expand accessibility, making it an increasingly vital component of global communication infrastructure.