GPS Receiver Features

GPS stands for Global Positioning System and the system includes a network of satellites orbiting the earth and transmit information back constantly. A-GPS receiver's hand is a GPS navigator, portable device that is high and information received from the satellite can identify the specific locations on land, air or water.

The three parts of GPS

GPS consists of three parts, space, control andthe user. Space refers to the satellite, control refers to the control center on Earth, and the user is the person who manages the GPS.

Satellites

There are currently 24 satellites orbiting the Earth every 12 hours. They were originally created by the UP Department of Defense for military purposes in life, but are now also used for civilian purposes. A GPS receiver must lock in at least three satellites and longitude to give a 2DWide and four or more satellites to give a 3D position longitude, latitude and altitude.

If the GPS receiver, the position was established, other measures of speed can be calculated as the user is traveling, the distance traveled, storage, and information about sunrise and sunset. When the user enters their destination, so the distance from the target can also be tracked.

Control stations

Currently there areeleven control stations on earth, which tracks the satellites and send data to the master control station. With eleven centers, each with two satellite centers, or more to be seen. There are plans for 5 stations, which means more control, that each satellite would be seen by at least three of them.

You

The user of the system, each individual their hand-held GPS receiver. Users of handheld GPS receivers can alsoHikers, boaters, pilots, fishermen, hunters, soldiers, or for geocaching fun. Basically, they are useful for those who know exactly where at some point or know where they want to go.

How accurate is GPS?

GPS receivers now are more accurate than ever, but can not always exactly 100%. The common-receiver's hand-held GPS, the position of about 3 to 15 feet, but there are some errors thatcan affect the accuracy. Some of these errors are caused by the delay in the signal, since the signal levels of the atmosphere from tall buildings or the Rockies, which will increase the time for the signal to reach the recipient, or the number and location of reflection to be transmitted to satellites .

What are the features to look at a handheld GPS

One of the features that are useful in a handheld GPS must be that itwaterproof. If you go hiking, fishing or boating, if it falls into the water and is not waterproof, it will be ruined. You might want to consider if the GPS works with disposable batteries, rechargeable ones or those with an internal battery that can be recharged at home. Many can also be recharged with a car charger adapter or USB cable.

Some GPS receivers can cost $ 100, while others can cost several hundred euro - it all depends on howmany features that you need. Some have removable micro-SD cards that can be loaded with maps and waypoints. E 'can also micro-SD cards that are pre-loaded with maps, lake maps, graphs and maps to buy city. Other features include altimeter, electronic compass, tide data, and some even include a digital camera.

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