Antenna Subsystem In Satellite Communication

Satellite communication introduction.

Antenna subsystem in satellite 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. The tracking system present in the earth station performs mainly two functions. Attitude orbit control system ttc m system power system communication subsystems satellite antennas space qualification equipment reliability 3. It is one of the most important subsystem of space segment subsystems.

Explain with neat diagram the antennas used in satellite communication. Among which the main operations are orbit controlling altitude of satellite monitoring and controlling of other subsystems. Transponder performs the functions of both transmitter and receiver responder in a satellite. Satellite control and monitoring is accomplished through monitors and keyboard interface.

A satellite communication consists of mainly two segments. 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. Those are receiving of signals which are coming from earth station and transmitting signals to one or more earth stations based on the requirement.

Satellite antennas perform two types of functions. The subsystem which provides the connecting link between transmitting and receiving antennas of a satellite is known as transponder. In general terms a satellite is a smaller object that revolves around a larger object in space. 2 explain briefly the offset feed used with paraboloidal reflector antenna stating its main advantages and disadvantages.

May 2013 may 2014 dec 2014. Satellite systems ravikiran s. Satellite communication system uses a variety of antenna system. The tracking subsystem keeps track with the satellite and make sure that the beam comes towards it in order to establish the communication.

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. Now let us discuss about the satellite antennas. The function of each subsystem and the relationships to the others will be.

We know that communication refers to the exchange sharing of information between two or more entities through any medium or channel. 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. This tracking can be done in one of the. Antennas are present in both satellite and earth station.

This maybe linear dipole helix horn antenna array and parabolic reflector. In other words it is nothing but sending receiving and processing of.