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#37.how does a satellite work? What is the science behind satellite?

 We can predict about the cyclone, just because of the weather satellite.  Communication satellites help us to handle mobile communications. They are very useful but how it works?


 

This story is about satellite and the science behind it.



Satellite:

The satellite comprises of several parts. The primary satellite parts which integrate transponder, antenna subsystems, sun-powered cell, battery backup, camera, thrusters.

       



🛰️Satellite transponder:

This electronic circuit assists satellite with changing over got 6 GHz uplink frequency to 4 GHz downlink frequency. The basic task of the transponder is to do frequency modification. This downconverted signal is enhanced before being transmitted back to the earth utilizing on power intensifier available on satellite.


🛰️Antenna subsystems:

The antenna helps get and transmit the signals from the earth and towards earth separately. There are different kinds of receiving wires fixed on satellite dependent on the use of utilization, for example, reflector, sensors, parabolic, microstrip and so forth. Most regularly there will be reflector receiving wire alongside bar to cover one earth station on earth. So to cover more than one earth stations more than one reflector antenna are required.


🛰️Solar cell and battery :


It keeps satellite running in space. Solar cells changes over sun powered vitality to the electrical energy for satellite activity. During daylight conditions it is valuable. During the absence of daylight, the battery will deal with giving the capacity to the satellite to its activity.


NiCd, NiMH2, NiH2, NAS and LiIon based batteries are utilized in satellite dependent on need.




How satellite works?

Before satellites, TV signals didn't go far. Television streamers just travel in straight lines. So they would rapidly trail off into space as rejected to following Earth's bend. Here and there mountains or tall structures would square them. Calls to faraway spots were likewise an issue. Setting up phone cables over significant distances or overflowed is difficult and costs a great deal.


Why does not satellite fall out of the sky?        

Rocket in orbit

Satellites additionally can see into space superior to telescopes at Earth's surface. That is on the grounds that satellites fly over the fogs and particles in the atmosphere that can prevent the view from ground level.

With satellites, TV signals and calls are sent upward to a satellite. At that point, in a split second, the satellite can send them down to various areas on Earth.

Satellite

Satellites are sent into space by a rocket-propelled starting from the earliest stage enough speed to get outside our atmosphere. When the rocket arrives at its decided area it drops the satellite into its circle. The underlying pace of the satellite kept up as it isolates from the rocket is sufficient to save a satellite on the circle for a long time.

A satellite keeps up its circle by adjusting two factors: the speed it takes to go and the gravitational force that Earth has on it. A satellite circling nearer to the Earth requires greater speed to oppose the more grounded gravitational force.

Thanks for reading.