Calculation of Uplink path loss

1.Calculation of Uplink path loss

1. Up link frequency Up link frequency is frequency at which Ground Station is communicating with Satellite. For C band up link frequency is in the order of 6 G Hz

2. Up link path loss Up link path loss depend on up link frequency & distance between satellite and ground station.

       Here
                         ‘d’ is the distance between satellite & ground station
                         ‘f’ is the frequency; C is the velocity of light

Example: Distance between satellite & earth station is ‘d’= 37,000 Km
                Up link frequency ‘f’= 6.175 G Hz
            uplink loss or free space loss= 10 log(4pi*37000*C/f)²                                                           =  20 log(4pi*37000*C/f)
                                                          =  20log(4*pi*37000*3*10⁸/f)
                                                          =  199.61 dB