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Why geostationary satellites require to transmit the TV signals?
Wiki User
∙ 14y ago
If a satellite appears to move in the sky, then the ground station antenna has
to keep moving in order to follow it, and the satellite will be below the horizon,
invisible, and unusable for half the time over the long run. That would really put
a crimp in the operation of all the little 2-ft satellite TV dishes on top of garages.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agobecause the satellite dish receiver will lose the signal if it's not geostationary. the satellite should be in one direction.
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Where are GPS satellite signals processed?
GPS signals are processed in the GPS unit and displayed, and they are also processed via three Global Position Satellites. All four units work together and process GPS signals (some to the satellites from the GPS, and some from the satellites to the GPS) to create an accurate position.
How does a GPS satellite work with a GPS device?
signals from at least 3 satellites send signals to and receive signals from the gps which are then triangulated to give the exact position of the GPS unit. Most GPS units are receive only. That is they must receive positional and timing information from the GPS satellite constellation. The internal processor them computes your position based upon this data(triangulation). Generally receiving data from three or more satellite's is needed to be produce a good fix (your position) but this is also dependent upon the geometry of the satellites. The best fixes are obtained when you have signals from three or more satellites which are geometrically separated by 45 degrees.
What do Satellites have to do with cellphones?
with calls themselves, nothing. however all current cell phones have a GPS receiver that picks up and decodes the signals from GPS satellites so their position can be accurately determined for emergency 911 calls.
Explain how a communications satellite is used?
http://library.thinkquest.org/03oct/02144/basics/satcomm.htm Satellite Communication Satellites have now become an integral part of the worldwide communication systems. Although long-range and long distance communication took place much before the introduction of satellite systems, they had a lot of disadvantages. Point - to - point communication systems are very difficult in the case of remote & isolated locations, which are surrounded by oceans, mountains and other obstacles created by nature. The satellite is nothing more than a radio-relay station But, they have one potential advantage- The capability of a direct line of sight path to 98% (excluding the polar caps, which are in accessible to satellites) of the earth's surface. One of the most important event in the history of satellite communication took place when COMSAT or communication satellite corporation, launched four satellites within 6 years that is between 1965 to 1979. The first of these series was the 'Early Bird' , which was launched in 1965. This was the first communication station to handle worldwide commercial telephone traffic from a fixed position in space. The next series INTELSAT was a group of satellites that served 150 stations in 80 countries. ..................................... get the points and write the essay urself
What does a satellite engineer do?
A satellite transmits and receives transmitted signals sent by broadcasters to provide information to accessing areas. it looks at stars and the moon. it tells the scientists what is out of space.
Which satellites transmit and receive signals in the 12 to 18 GHz band?
ku-
Why do you think Only solar cell and not dry cells or automobile batteries are used in satellites?
the others require a medium in order to transmit and recieve the signals from outer space
Why do you think only solar cells and not dry cells or automobile batteries are used in satellites?
the others require a medium in order to transmit and recieve the signals from outer space
What are some uses of satellites orbiting the earth?
The difference is in the tilt of the plane of the orbit relative to the Earth's equator, which is zero for geostationary and 90 degrees for polar-orbit.
Why can't we use dry cells or automobile batteries instead of solar batteries for satellites?
Dry cells and automobile batteries require a medium in order to transmit and receive the signals from outer space.
What are Global Positioning satellites used for?
Mainly to transmit GPS timing signals that receivers can use to determine their positions.
Which satellite configuration allows you to transmit signals globally?
At least three geosynchronous satellites orbiting equidistantly from one another.
How do artificial satellites work in the Philippines?
In the Philippines, artificial satellites work as transmitters. These transmit cellular phone communications, Internet, weather observation, television channels' signals, and navigation.
How do you use GPS in a sentence?
GPS is an abbreviation of Global Positioning System, a receiving system that utilises regulated signals sent from geostationary satellites to triangulate its location upon the Earth.
What are Communications satellites?
Communication satellites receive signals from antennae on the Earth's surface, or from other satellites, amplify the signals, and beam them back to Earth. Because they are hundreds or thousands of miles up, their signals can cover a larger area than most radio or television signals broadcast on the surface, because of the Earth's curvature. (Radio waves don't go around corners well.) Some communications satellites are in quite low orbits, around 150 miles high. Others are in "geostationary" orbits at about 22,500 miles, where their rotation around the Earth is the same speed as the Earth's rotation, so that they stay above a particular spot all the time. Most broadcast satellites for TV, phone service and satellite radio are geostationary.
What method of signal transmission uses radio waves to carry signals?
The analog method of signal transmission uses radio waves to carry signals. Digital transmission involves the use of satellites to transmit signals.
How active satellite differ from passive explain with an example?
active satellites are receives the transmitted signal from earth ,amplify the signal and transmit it. it is also called as transponders. but passive satellites just receive and transmit the signal.itac as the reflector
