Learning About the New Technology in (GPS) Global Positioning Systems
Summary Article By Denise Hill
A Quick History of GPS
global positioning systems
GPS,or the Global Positioning System was originally developed by the Department of Defense for use in weapons delivery.The testing of GPS equipment was started in 1977, in Arizona.
Satellite launching was completed by 1994,and there were 24 satellites.
GPS use by civilians was quickly developed. GPS technology uses satellites to to give three dimentional global positioning to a receiver.
There are many different types of gps units on the market today. With the many fatalities on the road,teenage drinking,speeding,carjacking,cars breaking down,people getting lost,and people being abducted and murdered,parents need to know there is a way to protect their loved ones. Trucks can speed and cause accidents.
Global Positioning Systems – How They Work
Summary Article By Dave Thinel
The Global Positioning System (GPS) was originally developed by the US Military who launched satellites (the first satellite was launched in 1978) into orbit. GPS transmission satellites orbit the earth in a very precise and constant manner. The receivers we use simply receive the transmitted signals and compare the time the signal was transmitted against the time it was received.
To provide accuracy the receiver has to receive signals from a minimum of 3 satellites. In actual use, the receivers typically track the signals from many more satellites. In order to provide data like speed, direction, distance traveled, etc. the receiver repeats the position calculation on a continual basis and thus updates the position and other data.
The signal transmitted includes the satellites ID, the satellites position at any given time and the date and time. Technology referred to as Wide Area Augmentation System (WAAS) available with some receivers improves accuracy to about 5 meters. As a result we now see and enjoy GPS watches, auto and boat GPS navigation systems, GPS cell phones.
Check out information of gps vehicle tracking, gps tracking system, tracking gps
Tags : global positioning, global positioning system, global positioning systems, gps global positioning system, gps systems