Communication satellite
Communication Satellite (English: Communications Satellite, referred to as "CS") is used in space communications satellites. Modern communication satellites use geostationary orbit, Monian or low latitude orbit. Satellite orbit from the ground is very high, the antenna beam can cover the vast area of the Earth, and radio waves from terrain restrictions, to achieve long-distance ground communications. The satellite is equipped with a repeater consisting of receiving and transmitting equipment, which amplifies and receives the received signal and transmits it to the ground. The orbital height and inclination can be varied, but it is commonly used for geostationary orbit. 4 satellite geostationary orbit communication satellite network, can achieve global real-time communication; this satellite in addition to the satellite system with the general sub-system equipment, but also equipped with communication transponder, ground stance stability control, ground-oriented antenna , Satellite position to keep aliquot system equipment. Communication satellites are designed to compensate for the lack of submarine cable communications, usually used for mobile communications. Such as ships or aircraft and other vehicles away from the land, can not use the cable communication, they need to communicate satellite. ...