Satelliittilinkki

Satelliittilinkki, known in English as a satellite link, refers to the communication path established between a satellite in orbit and a ground station or another satellite. This link is essential for transmitting data, voice, or video signals across vast distances, overcoming geographical barriers that terrestrial communication methods cannot easily traverse.

The operation of a satellite link involves a sender transmitting a signal, which is then amplified and relayed by the satellite. The satellite acts as a transponder, receiving the signal on one frequency, processing it, and re-transmitting it on a different frequency to the intended recipient. This process allows for broadcasting to wide areas or connecting remote locations.

Satellite links are utilized in various applications, including telecommunications, broadcasting (television and radio), internet access, navigation systems like GPS, earth observation, and scientific research. The reliability and reach of satellite links make them indispensable for global connectivity and specialized communication needs.

The design of a satellite link considers factors such as frequency bands, power levels, antenna gain, atmospheric conditions, and orbital mechanics to ensure efficient and robust data transfer. Interference from other signals and signal degradation due to weather are common challenges that engineers work to mitigate.