SOLAR SYSTEM

Detailed explanation-1: -is a loss of power of a satellite downlink signal due to earth’s atmosphere. Explanation: The path loss is the loss in signal strength of a signal as it travels through free space.

Detailed explanation-2: -Path loss is a dilution of the transmitted energy as the radiated wavefront expands during its travel from transmitter antenna to receiver antenna. For example, when communicating from Earth to a geosynchronous satellite (at an altitude of 37, 786 km) at S-band (∼2 GHz, ≈ 0.15 m), the path loss term is−190 dB.

Detailed explanation-3: -Free space loss is the dominant component in the loss of the strength of the signal.

Detailed explanation-4: -These signals include cosmic noise, atmospheric noise, rainfall noise, ground noise, interfering noise and multipath fading.At last, we have concluded the quality factor expression (G/Tays) about earth communication station. This is significant to the analysis of satellite communication link.

Detailed explanation-5: -How does troposphere affect the satellite signals? Explanation: The major sources of errors are when the signal pass through the atmosphere. The troposphere causes the propagation velocity of the signal to be slowed, compressing the signal wavelength.

Detailed explanation-6: -The frequency with which, the signal is sent into the space is called as Uplink frequency. Similarly, the frequency with which, the signal is sent by the transponder is called as Downlink frequency.