SOLAR SYSTEM

Detailed explanation-1: -The transmission of signal from first earth station to satellite through a channel is called as uplink. Similarly, the transmission of signal from satellite to second earth station through a channel is called as downlink.

Detailed explanation-2: -A typical satellite link involves the transmission or uplinking of a signal from an Earth station to a satellite. The satellite then receives and amplifies the signal and retransmits it back to Earth, where it is received and reamplified by Earth stations and terminals.

Detailed explanation-3: -Explanation: The original signal being transmitted from the earth station to the satellite is called the uplink, and the re-transmitted signal from the satellite to the receiving stations is called the downlink.

Detailed explanation-4: -An earth station is a collection of equipment installed on the earth’s surface that enables communications over one or more satellites.

Detailed explanation-5: -1. Large antennas required for transmit and receive on the INTELSAT type global networks with gains of 60 to 65dBi (15 to 30 metres diameter). 2. Medium sized antennas for cable head (TVRO) or data receive only terminals (3-7 metres diameter)

Detailed explanation-6: -Introduction. A transponder channel aboard a satellite may be fully loaded by a single transmission from an earth station. This is referred to as a single access mode of operation. It is also possible, and more common, for a transponder to be loaded by a number of carriers.