TECHNOLOGY
The Global
Positioning System (GPS) is actually a constellation of 27
Earth-orbiting satellites (24 in operation and three extras in case one
fails). The U.S. military developed and implemented this satellite network
as a military navigation system, but soon opened it up to everybody else.
Each of these 3,000- to 4,000-pound solar-powered satellites circles the
globe at about 12,000 miles (19,300 km), making two complete rotations
every day. The orbits are arranged so that at any time, anywhere on Earth,
there are at least four satellites "visible" in the sky. Read
More in About GPS
Motivated by the events of 9/11 2001 and
problems with 911 calls from cellular phones, the FCC requires that by the
end of 2005 all cell phone carriers must be able to trace the location of
cell phone calls to within a range of no more than 100 meters. Read
More in About GPS Cellphones
GPS or Global Positioning Systems is a
term that most commonly conjures up images of vehicle navigation systems,
space-age satellite technology, and interactive maps for outdoors-types
and sportsmen. But the reality is that there are far more applications of
Global Positioning Systems beyond GPS
vehicle tracking or map navigation that everyday people like us can
benefit from. All it takes is a bit of creativity, and some
trial and error. Here are a few of the many possibilities that can benefit
you right now in your busy and hectic life. Read
More in GPS Practical Uses
Similar to GPS
tracking devices and also in-car Global Positioning System navigation
systems, GPS-enabled
phones let you view and listen to turn-by-turn directions via your
handset, whilst also allowing cellphone
GPS tracking through the use of tracking software. Additionally
voice-enabled GPS locators can act primarily as a GPS tracking device but
also contain basic cellphone GPS functionality such as voice communication
and 2 way SMS messaging. Read
More in How GPS Cell Phone Navigation Works
The technology behind this new phone
tracking service is surprisingly simple. All mobile phones work by
being constantly in touch with the nearest phone mast to maintain good
reception. You can sometimes even hear these signals as funny
chirruping/clicking sounds if you place a mobile phone close to a
loudspeaker or radio. Read
More in How Mobile Cellphone Tracking Works
|
