The altitude of (manmade) satelites assures minimal signal interference when sending/recieving transmission.
It also gives the device a "birds eye view", necessary for optimal data collection and transmission.
note: a satelite can be defined as anything with an orbit around another mass.
How fast a person is moving, while standing still, on the surface of the Earth.
Clay
The Ionosphere is one layer of charged particles above the Earth, and is important for High Frequency radio communication. There are several layers in the ionosphere, and since they weren't certain that the first one identified was not guaranteed to be the lowest, it was given the name of 'the e-layer'. Above it are some f-layers, and below it a d-layer. Some of these are at least in part controlled by the UV from the Sun.
Venus is unique in that it and Mercury are the only planets in the solar system with no natural satellites. Currently the European Space Agency (ESA) has a satellite named Venus Express orbiting the planet.
Remembering that only about a tenth of any iceberg is above the water, Titanic's berg was about 96 feet above sea level.
satellites by their very nature are traveling above the earth in high orbit, don't think you will find them on the ground in Africa, at least not working ones.
At least four GPS satellites are required to pinpoint a location on Earth's surface accurately using trilateration. Three satellites are needed to determine a two-dimensional position (latitude and longitude), while the fourth satellite provides the altitude component.
A minimum of 4 satellites is needed to obtain a full GPS signal. These satellites are used to triangulate your position accurately on Earth.
You would need at least three GPS satellites to pinpoint your location. However, you would need a fourth to also identify your elevation.
satellite should be at least 42000Kms from center of earth .As the radius of earth is around 6370Kms ,the height reduces to 35000Kms.
It takes at least 3 satellites.
In our Solar System, Planet Mercury and Planet Venus have no (0) satellites at all. No satellites orbit them. But if you are talking about planets with satellites and with the fewest moons, it is the Earth. Earth has only one natural satellite, THE MOON.
It hita least at the north Pole
A user can typically observe at least 4 GPS satellites anywhere on Earth to accurately calculate their position using trilateration.
probably not, as the Global Positioning System uses data from several satellites to calculate the receivers position. At any given time, there are usually at least 4 GPS satellites above the horizon from anywhere on Earth. Only interference on the GPS frequency can impair the accuracy.
There are a great number of satellites currently orbiting the Earth, and they are ALL important; at least, important enough to SOMEBODY to spend millions of dollars to launch each one.Depending on your interests, the "most important" satellites are probably the weather forecasting satellites, followed by the communications and GPS satellites.
47% at least.