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How the satellites work.

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How the satellites work.

How do satellites work

 

on the ground, you can look satellite are very similar - boxes or cylinders decorated with shiny wings of solar panels. But in space, behave these machines annoying quite differently depending on the trajectory of its flight and its height and direction. As a result, classification can be both work hard. One way to think about how the rotation of the device to the constellation of the target (usually the ground). Remember that there are two basic forms for the orbit: circular and oval shape. Start some satellites of the elliptical, and then, with the push patch of small rockets on board, gaining a circular track. Others permanently in the tracks of the elliptical known as the orbits of the sire of. Spin these things in general from North to South, over the poles of the Earth, and takes about 12 hours to do the trip is complete.

 

passing an orbiting satellite in polar orbit above the poles of the planet on each revolution, despite the fact that their orbits are less elliptical cells. Keep the polar orbit is fixed in space as Earth rotates inside the orbit. As a result, passing a large part of the land under a satellite in polar orbit. Because polar orbits achieve excellent coverage of the planet, often used for satellites that you draw the maps, and photography. Depends experts predict the weather on a global network of satellite sector covering the entire globe every 12 hours.

 

there are three categories :

low Earth orbit (LEO) -

Under the LEO satellites a region of space of about 111 miles (180 km) to 1243 miles (2000 km) above the Earth. Think of the satellites that are approaching the surface of the Earth is ideal to conduct surveillance operations for the purpose of military to collect weather data.

 

the orbit of geosynchronous (GEO) –

orbiting satellites, the GEO around the Earth at a height greater than 22223 miles (36000 km) period of orbit is the same as the period of the Earth's rotation: 24 hours. This category includes satellites with respect to Earth (GSO) remain in orbit above the spot fixed on the ground. Not all satellites are geosynchronous geostationary. Needs some on elliptic orbits, which means they drift east and West over a fixed point on the surface through the pores throughout the entire. Needs some on orbits not aligned to the equator. It is estimated that these tracks orbital degrees of Milan. This also means that the satellite's trajectory will take him north and south south of the equator during the complete orbit. You should fly geostationary satellites above the equator to remain in a spot fixed above the Earth. Used several hundred of the satellites TV, communications, weather and the orbits of geostationary. Can be very busy.

 

the orbits of the Earth medium MEO

). available these satellites between releases, low and high, so about 1, 243 miles (2000 kilometers) to 22223 miles (36000 kilometers). Working satellites for navigation, such as the type used by the Global Positioning System for your car, well on this rally. May be the typical specifications for the satellite at a height of miles (20 and 200 km) and speed of Orbital of 8, 637 mph (13, to 900 kilometers per hour).

finally, possible to think of satellites in terms of where the "seen it". Most of the objects sent into space during the past few decades looking at the ground. Containing these satellites on the cameras and were able to see our world through different wavelengths of light, making it possible to enjoy stunning views of the UV and infrared rays to our planet changing. Says a lower number of satellites to guide their "eyes" into space, where wonderful vistas of the stars, planets, galaxies, and scanned objects, such as asteroids and comets, which could be heading towards a collision course with Earth.

 

 

references /  -  art satellite TV in Kuwait

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