2 explain briefly the offset feed used with paraboloidal reflector antenna stating its main advantages and disadvantages.
Antenna subsystem in satellite communication.
A satellite communication consists of mainly two segments.
Antennas are present in both satellite and earth station.
The subsystem which provides the connecting link between transmitting and receiving antennas of a satellite is known as transponder.
This tracking can be done in one of the.
Those are space segment and earth segment.
These subsystems include command and mission data handling telemetry and tracking and the antenna payloads for both command telemetry and mission data.
In satellite communication system various operations take place.
Those are satellite acquisition and tracking of satellite.
We know that communication refers to the exchange sharing of information between two or more entities through any medium or channel.
For example moon is a natural satellite of earth.
In general terms a satellite is a smaller object that revolves around a larger object in space.
Now let us discuss about the satellite antennas.
The tracking subsystem keeps track with the satellite and make sure that the beam comes towards it in order to establish the communication.
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.
Attitude orbit control system ttc m system power system communication subsystems satellite antennas space qualification equipment reliability 3.
The function of each subsystem and the relationships to the others will be.
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.
It is one of the most important subsystem of space segment subsystems.
Among which the main operations are orbit controlling altitude of satellite monitoring and controlling of other subsystems.
1 explain different types of antenna used in satellite communication.
This maybe linear dipole helix horn antenna array and parabolic reflector.
Satellite systems ravikiran s.
In other words it is nothing but sending receiving and processing of.
Satellite communication introduction.
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.
Satellite control and monitoring is accomplished through monitors and keyboard interface.
Those are receiving of signals which are coming from earth station and transmitting signals to one or more earth stations based on the requirement.
Explain with neat diagram the antennas used in satellite communication.
Satellite antennas perform two types of functions.
Satellite communication system uses a variety of antenna system.
