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How many geo stationary satellites are needed to cover the earth at a time?
Wiki User
∙ 13y ago
Please be a little more precise in your meaning when you say "cover" the Earth. For radio or TV communications, three satellites in geosynchronous orbit will be visible from any inhabitable locale on the planet. (The polar regions aren't really "inhabitable", and aren't visible from GEO. )
For navigational purposes, more are required. The GPS system requires line-of-site to FOUR satellites at one time in order to give a good "fix" of your position; the USAF uses 27 satellites to accomplish this, anywhere on the Earth.
Wiki User
∙ 12y ago
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How many times does a GPS satellite orbit the earth in a week?
The GPS satellites are not in geo-stationary orbit, but instead orbit twice every time the Earth rotates once. This means that for any observer the satellites appear to orbit once overhead each day. Such an arrangement gives better coverage. It is also clever in the sense that the motion of any GPS satellite will repeat itself each day. The GPS constellation of 24 satellites are arranged in six different orbital planes, each inclined 55 degrees to the equator. To obtain exactly two orbits per day, the satellites are placed at an altitude of 20,200km!!!
Which plant has fewer satellites earth or Uranus?
i meant planet Earth has fewer because Earth has only 1 satellite and Uranus has 27 satellites.
How many GPS satellites are required to triangulate a plan-form position?
You would need at least three GPS satellites to pinpoint your location. However, you would need a fourth to also identify your elevation.
Does the Earth have more natural or more artificial satellites?
Earth has one natural satellite and more than a thousand artificial satellites.
Why do satellites have a period of rotation equal to the earths period of rotation?
Some satellites cover the whole earth each pass, because that is what they are used for. However, many also cover nly certan regions such as the poles or the equator or one continent or one country. Geostationary orbiters for example, stay above the same place forever (that is, until they are taken or sent down by something). Many orbit over the same places each time, covering the same regions each pass. This is true of all satellites, the difference is how large the regions are nd how many of them. Some satellites cover the whole earth each pass, because that is what they are used for.
What is a non Geo stationary satellite?
Non Geo stationary satellite is that satellite which has different angular velocity from earth and not placed on the height of 36000 Km from the earth. If you use Geo stationary satellite than only 3 satellites are enough to cover whole world. most of satellite are geostationary and they are(most of them) active satellites too.
What is the name of the orbit that allows satellites to orbit the earth but yet appear stationary?
The Earth orbit in which satellites appear to be stationary is called the, "Geostationary Orbit". Some call it a synchronous orbit.
Can five satellites cover the whole surface of the earth?
Actually only 3 geostationary satellites are enough to cover the earth.
What are the different artificial satellites launched into orbit?
The different artificial satellites launched are Low Earth Orbiting Satellites for Remote sensing, Medium Earth Orbiting Satellites like GPS , Geo Stationary Orbiting Satellites for Communication and Molnia Satellites again for Communication. These are the different artificial Satellite orbiting the Planet Earth.
What are Geo - stationary orbit satellites?
Geo stationary satellites are man made objects sent up into space that orbit the Earth parallel with and in the plane of the equator. They are sent up into space so that their distance from the Earth and hence their orbital speed matches the speed with which the Earth rotates on its axis. This means that they maintain a constant "stationary" position over a point on the equator of the planet. This is useful for communications and earth observation purposes.
How does satellites avoid collision?
The vast majority of satellites are in geo-stationary orbits. This means, they travel around the Earth at the same speed that the Earth rotates - making them appear in the same place. One example is the GPS satellite network. Other satellites that actually orbit around the Earth, are at a different altitude - so they would (thoretically) never collide with a stationary one. Those that are orbiting, are placed in such a way, that they also avoid each other.
How many satellites are needed to provide a place on earth?
If the question is regarding finding the latidude and longitude of one point on the earth, the answer is a minimum of three satellites. The method used is called triangulation. If you wish to know the altitude of the point, a minimum of four satellites are needed.
What is meant by the term bgan?
The term BGAN means Broadband Global Area Network. It is made up of three satellites which is owned by Inmarsat. You can connect with the satellites using any of the BGAN terminals because the satellites are in stationary orbit around the earth.
How far must a geostationary communication satellite orbit?
Geo-stationary communication satellites are 35,768 Km far from earth surface at an equatorial latitiude.
What is the minimum number of artificial satellites required for communication through the globe is?
3 GEO Satellites located at 120 degrees are required to cover whole of the earth.
What are the artificial satellites of the Earth?
All the satellites, communications, exploratory, military etc. are artificial satellites of Earth.
How many times does a GPS satellite orbit the earth in a week?
The GPS satellites are not in geo-stationary orbit, but instead orbit twice every time the Earth rotates once. This means that for any observer the satellites appear to orbit once overhead each day. Such an arrangement gives better coverage. It is also clever in the sense that the motion of any GPS satellite will repeat itself each day. The GPS constellation of 24 satellites are arranged in six different orbital planes, each inclined 55 degrees to the equator. To obtain exactly two orbits per day, the satellites are placed at an altitude of 20,200km!!!
