File1, 2, & 3 for parora:


INFO300

File1:

A global positioning system (GPS) is a network of satellites and
receiving devices used to determine the location of something on
Earth. Some GPS receivers are so accurate they can establish their
location within 1 centimeter (0.4 inches of the desired area).
GPS receivers provide
location in latitude and longitude. They also provide accurate time

File2:

GPS receivers are programmed to receive information about where each
satellite is at any given moment. A GPS receiver determines its own
location by measuring the time it takes for a signal to arrive at its
location from at least four satellites. Because radio waves travel
at a constant speed, the receiver can use the time measurements
to calculate its distance from each satellite.

File3:

GPS receivers are programmed to receive information
about where each satellite is at any given moment. A GPS receiver determines
its own location
by measuring the time it takes for a signal to arrive at its
location from at least four satellites. Because radio waves travel
at a constant speed, the receiver can use
the time measurements to calculate its distance from each satellite.
Sometimes there are obstacles to getting a clear GPS signal.
Gravity can pull the GPS satellites slightly out of orbit.
Parts of Earth's atmosphere sometimes distort the satellite radio signals.
Trees, buildings, and other structures can also block the radio waves.
GPS control and monitoring stations around the world track the
satellites and constantly monitor their signals.

No lines are longer than 80 characters, TYVM. Other specified properties aren't being scored automatically at this time so this is not necessarily good news...