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Why is it not sensible to put communication satellites into lower orbits?
Wiki User
∙ 15y ago
There is only one orbital altitude where the satellites do not appear to move; that is the 23,500 mile "geo-synchronous" orbit where communications satellites typically reside. Lower orbits would cause the satellites to orbit more quickly, requiring that the terrestrial antenna be equipped to follow it as it passed over, and to be able to switch to a new satellite once the first one was below the horizon. Since satellite TV antennas are large and not easily movable, a geo-synch orbit makes more sense.
Wiki User
∙ 15y ago
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How does friction with the atmosphere affect the speed of an artificial satellite?
Satellites in a low orbit, however, are slowed by friction with Earth's atmosphere.
How did sputnik land?
It didn't.First off, sputnik was a "family name" for a series of satellites, but none that was built for re-entry. They burnt up in the atmosphere as their orbits got lower.
When did sputnik land?
It didn'tFirst off, sputnik was a "family name" for a series of satellites, but none that was built for re-entry. They burnt up in the atmosphere as their orbits got lower.
What is the procedure used at the end of the lifetime of a satellite?
Some satellites, those in high orbits, are simply left to uselessly wander. Others, in lower orbits, may be "deorbited" (deliberately crashed) by various means to prevent them from later falling into inhabited areas. See related links for more details.
What is nearer to the earth satellite or moon?
Satellites are in a lower orbit.
What bone makes up the lower portion of the orbits and the cheeks?
zygomatic
What is the lower layer of internet communication design?
The IP (Internet Protocol) is the lower layer of internet communication design.
How long does it take to build a satellite?
The time it takes to put together a satellite varies on the size and structure of the satellite. A simple satellite could be put together in a couple of months, where a large science mission could take ten or more years.
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It is communication with a satellite orbiting the planet using microwaves, a type of electromagnetic wave of lower frequency than light but higher frequency than radio waves. Microwaves are often used in this way as they can penetrate the earth's atmosphere, but can travel a long enough distance to reach the satellites, unlike x ray waves.
What kind of orbit are observation satellites usually placed in?
You mean Earth observation satellites, and the answer is near-Polar low-Earth orbits. This means that as the satellite orbits from above one pole to the other, the Earth turns beneath it, and the satellite passes over the Equator, and every other point on its orbit, at a different place on each successive orbit. In this way, after enough orbits, it can view the whole Earth. Earth observation satellites are placed in low-Earth orbit because (a) they travel faster over the ground at lower altitude and (b) being closer to the ground, their telescopes do not need to be so powerful to achieve a given spatial resolution. Military observation, or spy, satellites, are often placed in a high parking orbit until they are needed, whereupon they are placed into a highly elliptical orbit to allow them to come very close to Earth (and hence see it with great detail) over the region of interest.
Do satellites change position?
Some do. There are two types of orbits we use regularly. The first is Geosynchronous That is the satellite changes speed at exactly the same rate as our planet, so it appears that it doesn't move. The second we use allot is polar orbits. This is a lower orbit that allows the satellite to see every point on the planet at regular intervals. We use these as spy satellites and for places like google maps. It is possible to change a satellite's position by using other satellites in the same orbit, as landmarks. This is done by entering the four digits of the landmark satellite into a computer and then programming the satellite to change to that direction. Natural satellites don't usually change position because for mankind to alter their orbiting path would be interfering. they occasionally change position due to their own cause.
What is the most most used and the strongest opioid?
I'd say: Dilaudid (Hydromorphone) 10 mg (lower is more sensible).
