Downlink refers to the communication link from a satellite to a ground station on Earth. This process involves the transmission of data, signals, or information from the satellite, which is orbiting in space, down to a receiving station located on the ground. The downlink is a crucial component of satellite communication systems, enabling the transfer of various types of data, such as television broadcasts, internet services, weather information, and scientific data collected by the satellite. The ground station, equipped with antennas and receivers, captures these signals and processes them for further use or distribution. This communication pathway is essential for maintaining connectivity and ensuring the effective operation of satellite-based services.