Table of Contents
- 1 Why does the communication satellite has to be in the geostationary orbit?
- 2 What orbit do most communications satellites use and why?
- 3 What are the advantages of geostationary satellite?
- 4 Why do geostationary satellites orbit above the equator?
- 5 Why does a geostationary satellite must orbit around Earth’s equator rather than in some other orbit?
- 6 What are the advantages of satellite communication?
- 7 What are the different types of satellites in communication?
- 8 What is the difference between medium Earth orbit and geostationary orbit?
Why does the communication satellite has to be in the geostationary orbit?
This is because it revolves around the Earth at Earth’s own angular velocity (one revolution per sidereal day, in an equatorial orbit). A geostationary orbit is useful for communications because ground antennas can be aimed at the satellite without their having to track the satellite’s motion.
What orbit do most communications satellites use and why?
Telecommunications satellites are usually placed in geostationary Earth orbit (GEO). GEO is a circular orbit 35 786 kilometres above Earth’s equator and follows the direction of Earth’s rotation.
Why are some satellites put into geostationary orbits while others are not?
Geostationary Orbit Weather monitoring satellites like GOES are in geostationary orbits because they have a constant view of the same area. In a high Earth orbit, it’s also useful for search and rescue beacons.
Why do geostationary orbits have to be above the equator?
Originally Answered: Why is the geostationary orbit necessarily above the equator? Because satellites orbit the center of mass of the planet which is in the center of the planet, more or less. So to orbit the Earth and stay above one place they need to orbit the equator.
What are the advantages of geostationary satellite?
The geostationary orbit is used by many applications including direct broadcast as well as communications or relay systems. The geostationary orbit has the advantage that the satellite remains in the same position throughout the day, and antennas can be directed towards the satellite and remain on track.
Why do geostationary satellites orbit above the equator?
It is always directly over the same place on the Earth’s surface. Satellites in geostationary orbit rotate with the Earth directly above the equator, continuously staying above the same spot. This position allows satellites to observe weather and other phenomena that vary on short timescales.
What are geostationary satellites explain it?
A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east). BGAN, the new global mobile communications network, uses geostationary satellites.
What is a geostationary satellite and what is it used for?
Geostationary orbits of 36,000km from the Earth’s equator are best known for the many satellites used for various forms of telecommunication, including television. Signals from these satellites can be sent all the way round the world.
Why does a geostationary satellite must orbit around Earth’s equator rather than in some other orbit?
Solar day is a bit longer because of the Earth’s orbital motion. Why does a geostationary satellite must orbit around Earth’s equator, rather than in some other orbit (such as around the poles)? A satellite on non-equatorial orbit would show daily motion even if its period is exactly 1 sidereal day.
What are the advantages of satellite communication?
Satellite Communication – Advantages
- Flexibility.
- Ease in putting in new circuits.
- Distances are effortlessly taken care of and expense doesn’t make a difference.
- Broadcasting conceivable outcomes.
- Each and each side of the earth is secured.
- User can control the system.
Why are GPS satellites not geostationary?
By placing the satellites just below or just above geostationary, such offensive satellites could go around every position, so it could disable all GPS satellites. Additionally, there are many reason to put satellites on such orbit, so it would not raise alarm, and it could be send with much advance (of time).
Why are communication satellites placed in geostationary orbit?
Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas (located on Earth) do not have to rotate to track them, but can be pointed permanently at the position in the sky where the satellites are located.
What are the different types of satellites in communication?
Communications satellites usually have one of three primary types of orbit, while other orbital classifications are used to further specify orbital details. MEO and LEO are non-geostationary orbit (NGSO). Geostationary satellites have a geostationary orbit (GEO), which is 22,236 miles (35,785 km) from Earth’s surface.
What is the difference between medium Earth orbit and geostationary orbit?
This is in contrast to the geostationary orbit, where satellites are always 35,786 kilometres (22,236 mi) from the earth. Typically the orbit of a medium earth orbit satellite is about 16,000 kilometres (10,000 mi) above earth. In various patterns, these satellites make the trip around earth in anywhere from 2 to 8 hours.
What is the geosynchronous orbit used for?
This is called a geosynchronous orbit. Satellites need to be very far away from earth and above the equator to rotate in this kind of orbit. This orbit allows the GOES-R series satellites to constantly scan the earth for severe weather as it develops while also monitoring the sun.