Satellite Communication - Defintion, Principle, Polar Circular orbit

Satellite communication is the branch of telecommunication which establishes and communication using satellites across the globe.We can divide the whole satellite communication into two parts namely space segments and earth segments.Satellite communication uses highly sophisticated and secured communication methods and algorithms.In satellite communication we use microwave frequencies ranging from 1GHz to 40 GHz which is further divided into various bands.In satellite communication we use multiplexing techniques such as FDMA,TDMA,CDMA etc which enables the bandwidth utilization.In the process of design we have to consider many parameters such as path loss,propagation loss,noise factors,atmospheric loss etc.