1-A satellite is like a radio antennae that sends out energy waves and helps connects to others.
2-It connects to the signal from space that gives you your tv signals sent by the tv station.
3-I don't really think there is a 3rd reason.
P.S sorry i couldn't come up with a 3rd reason :D
-- radio communications repeater... Westar, OSCAR, nine hundred vital TV channels, etc.
-- navigation ... GPS, etc.
-- global data collection and imaging ... weather, ocean temperature, forestation, ice cover, etc.
I think that there are only 3 uses. Or at least that is what my science homework says.
1). Photograph weather patterns on earth
2). Relay TV shows to millions of little dishes hanging on houses everywhere
4
Battle Stations - 2000 Huey Helicopter 3-4 was released on: USA: 2004
WWII in HD - 2009 Battle Stations 1-4 was released on: USA: 16 November 2009
WWII in HD - 2009 Battle Stations 1-4 is rated/received certificates of: Netherlands:12
FreeStyle - 2005 A Couple's Space 4-7 was released on: USA: 2006
ther are 4 satellites
As of April 4, 2014, India has a total of 74 launched satellites. The Indian satellites are under the management of Indian Space Research Organization or ISRO.
Yes, it uses 4.
For accuracy. 1 satellite can only tell you the distance from that satellite (a 3-d sphere around it). 2 satellites can only tell you what your distance from the two of them are(a 2-d circle between them). 3 satellites can give you 2 single points (1 one the surface of Earth, and one out in the middle of space, and they assume you are on Earth when using GPS). 4 satellites is to give extra accuracy on that point that you are at (4 times as accurate as 3 satellites).
GPS devices receive signals from several Global Positioning Satellites, which orbit the earth. The device uses the difference in timing from the signals to calculate its own position. I don't remember, but I think you can get a position with signals from 4 satellites, so you would need to have a clear signal from the satellites in order for the device to calculate its position.
Television service, weather prediction, global positioning system in my car.
There are currently 32 satellites, a gps system needs to receive a signal from at least 3 of them to function. Older systems only used 3-4 but new systems can use up to all 32 the more satellites that a system uses....the greater the accuracy.
triangulation
The first satellite to be placed in orbit was Sputnik I. It was the first of a series of "Sputnik" satellites and was launched on October 4, 1957 by the USSR (The Soviet Union).
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.
GPS does not use internet, it uses a constellation of US Airforce satellites that transmit coded radio messages. A GPS receiver picking up the radio messages from at least 4 of these satellites can decode them and determine latitude, longitude, altitude, and UTC time with great accuracy.
You need 4 to locate a position. There are 24 satellites in use in the sky with 8 spares.