Satellites transmit and receive various signals from ground stations in order to complete the process of communication and sending or receiving any messages. The basic purpose of a satellite when we talk about visual communication is that it allows video transmission. To be specific and simple, satellites are machines revolving around the earth in order to send or receive any useful information.
With the advancement in technology, there are many different types of satellites in present days. In order to track objects all around the world, scientists depend on satellite telemetry, which is a form of radio communication. Almost all scientists including biologists and environmentalists use this technology for various different studies. Weather analysis, migratory patterns of different animals all around the world and control of various satellites are some of the subjects associated with telemetry systems.