why are communicationsatellites placed in geostationary orbits?

Answer 1

A geostationary orbit is an orbital path in which the satellite remains fixed above a particular point on the Earth's surface. (That means it turns with the Earth, at the same rate.

Communication satellites must be in a geostationary orbit so that the communication device can always find it. (For Example: It will always be directly over Huston, Texas. . . . so the cellphone 'knows' where to go for the signal.)

Also, if the orbit was not geostationary, then sometimes it would be on the other side of the Earth, and therefore not available for service.

This, by the way, explains roaming charges. If you stay in the same geographic location with your communication device, finding the satellite is easy. However, if you leave your service area, then it's much harder for the satellite and the cell phone to link up.

Happy Holidays.

Quill.

Answer 2

If you place them in geostationary orbit at about 36,000 KM up, they stay in position over one spot on the earth. The satellite does one 360 degree circle every 24 hours, the same as the earth. You can then beam a signal from one country up to the satellite then down to another country. The dishes of the sending and receiving ground stations can remain stationary. They don't have to move to track a satellite circling the earth.

For TV, people can have cheap stationary receiving dishes.

Also, you only need one satellite to get 24 hour a day coverage, whereas low earth orbiting satellites that orbit every few hours are only in view for a short while each, so you need several of them to get 24 hour coverage.

Answer 3

• putting satellite tv for pc in orbit there's a large number of know-how and technologies used to verify that satellites enter their orbits interior the main potential useful techniques available. This ensures that the quantity of gasoline required is saved to a minimum; an important ingredient via itself because of the fact the gasoline itself must be transported till this is used. If too lots gasoline has for use then this will improve the scale of the launch rocket and in turn this very much will improve the fees. Many satellites are placed into geostationary orbit, and one person-friendly approach of reaching this is predicated on the Hohmann pass theory. this is the approach use while the holiday launches satellites into orbit. using this technique the satellite tv for pc is placed right into a low earth orbit with an altitude of around a hundred and eighty miles. as quickly as interior the terrific suited place in this orbit rockets are fired to place the satellite tv for pc into an elliptical orbit with the perigee on the low earth orbit and the apogee on the geostationary orbit as shown. while the satellite tv for pc reaches the suited altitude the rocket or booster is lower back fired to keep it interior the geostationary orbit with the terrific suited velocity.

Answer 4

It allows a continuous signal to be beamed to selected spots on the surface.
In northern parts of Russia where a geo signal was too weak,Russia launched four satellites in highly elliptical orbits above the north pole.
They were synchronized to turn on and off To get the longest signal when the satellite was at it"s highest and traveling slowest.

Answer 5

So they can be in constant signal view of their ground stations

Answer 6

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