SOLAR SYSTEM

Detailed explanation-1: -Note that a guard band in frequency domain is required to suppress interference to adjacent bands. Frequency separation is required to provide sufficient isolation between uplink and downlink. However, large frequency separation does not impact the capacity.

Detailed explanation-2: -Since the satellite cannot afford to deliver high powers because of battery power constraints, the downlink is sent at lower frequencies, while the station at earth can afford to transmit at high frequencies, so it transmits at higher frequencies.

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

Detailed explanation-4: -Telemetry containing science and engineering data may be transmitted to Earth by modulating the downlink carrier.

Detailed explanation-5: -The downlink and uplink co-channel interferences are functions of both deterministic parameters of the system, such as the total number of beams, antenna performance and frequency re-use scheme, as well as stochastic parameters, such as the traffic pattern, location and equipment pointing errors.

Detailed explanation-6: -In satellite telecommunication, a downlink is the link from a satellite down to one or more ground stations or receivers, and an uplink is the link from a ground station up to a satellite. Some companies sell uplink and downlink services to television stations, corporations, and to other telecommunication carriers.