Satellite communication introduction.
Antenna subsystem in satellite communication.
The objective of this chapter is to provide a comprehensive end to end overview of existing communication subsystems residing on both the satellite bus and payloads.
In other words it is nothing but sending receiving and processing of.
For example moon is a natural satellite of earth.
This maybe linear dipole helix horn antenna array and parabolic reflector.
Satellite antennas perform two types of functions.
A satellite communication consists of mainly two segments.
The subsystem which provides the connecting link between transmitting and receiving antennas of a satellite is known as transponder.
Among which the main operations are orbit controlling altitude of satellite monitoring and controlling of other subsystems.
These subsystems include command and mission data handling telemetry and tracking and the antenna payloads for both command telemetry and mission data.
This tracking can be done in one of the.
2 explain briefly the offset feed used with paraboloidal reflector antenna stating its main advantages and disadvantages.
The tracking subsystem keeps track with the satellite and make sure that the beam comes towards it in order to establish the communication.
Transponder performs the functions of both transmitter and receiver responder in a satellite.
The tracking system present in the earth station performs mainly two functions.
We know that communication refers to the exchange sharing of information between two or more entities through any medium or channel.
It is one of the most important subsystem of space segment subsystems.
In satellite communication system various operations take place.
Explain with neat diagram the antennas used in satellite communication.
In general terms a satellite is a smaller object that revolves around a larger object in space.
For the satellite and ground facility for a communications satellite application the elements on the ground include the ttc m antenna telemetry receiver command transmitter tracking subsystem and associated processing and analysis functions.
Those are space segment and earth segment.
Now let us discuss about the satellite antennas.
The antenna subsystem are complicated mechanical assemblies that are folded into dense packet for launch and must be deployed in large accurately alight assembly during orbit.
Antennas are present in both satellite and earth station.
Those are satellite acquisition and tracking of satellite.
Satellite systems ravikiran s.
Those are receiving of signals which are coming from earth station and transmitting signals to one or more earth stations based on the requirement.
1 explain different types of antenna used in satellite communication.
The function of each subsystem and the relationships to the others will be.
Satellite control and monitoring is accomplished through monitors and keyboard interface.
