GPS is the global positioning system and made system refers to a network of satellites that revolves around the world and transmit information continuously behind. A portable GPS driver is a device that is very portable and may receive information from satellites and GPS navigation put the finger on certain sites on Earth, in air or water.
The 3 parties GPS GPS consists in three parts, space, control, and the user. Space made reference to satellites, made control reference on Earth to control stations, and user is the person who operates the GPS.
The satellites currently it ya 24 satellites that revolve around in the world once every 12 hours. They have been discarded by the u.s. Department of Defense for military purposes, but they are now also used for civil use. A driver GPS needs almost key in at least three satellites to give a 2D longitude and latitude and four place or more satellites to give a site 3D of longitude, latitude and altitude.
When driver GPS location has been determined, the other measures can be calculated as the speed at which the user moves, the distance of the journey, family, and that information on the sunrise and sunset the time. If the user enters the destination, the distance to the target can also be tracked.
Place control for the time being eleven ya place controls on Earth as satellites and send data to the control of the master station. With eleven control stations, each satellite can be seen by two command stations or more. There ya plans for 5 stations more command, this would mean that each satellite will be seen by at least three of them.
The user User in the system each individual with his portable GPS leader. Users of portable GPS drivers may include hikers, boaters, drivers, fishermen, hunters, military personnel, or Geocaching pleasure. Basically, they are useful for this that wants to know where they are precisely at a time, or to know where they go.
How exact is a GPS?
Now drivers GPS are more accurate than ever before, but they cannot always be 100% accurate. Conductive common portable GPS to track your location close to 3 to 15 metres it ya errors which may affect the accuracy. Some errors are those caused by the delayed signal through layers of the atmosphere, signals that are reflected in the large buildings or mountains fragile than to increase the time for the signal to reach the conductor, or the number and place of satellites to one another.
What are the characteristics to look for one of the characteristics that are useful in a portable GPS in a portable GPS should be it is waterproof. If you walk, or to go walk boat fishing while, if it falls into the water and is not tight, it will be ruined. You may want to consider if the GPS short on disposable, rechargeable batteries, or those with an internal battery can be recharged at home. Several factors may also be responsible for a car or cable USB charger adapter.
Some drivers GPS cost less than $ 100 while others can cost hundreds of dollars - everything depends on how many features you need. Some have that can be loaded with data from the card and waypoints removable microscopic SD cards. It is also possible to buy the microscopic SD cards which comes preloaded with maps, internal Lake poses a card, marine cartography, and maps of the street of the city. Other features may include barometric altimeters, electronic compasses, taking account of the tide, and same some include a digital camera.