What is A-GPS and what is its use.

At present, it is known even to schoolchildren what a GPS-navigator is. It is a computer and a receiver, enclosed in a common housing. The receiver receives signals from satellites in orbit, and the computer, in turn, deciphers these signals and indicates the location of the receiver. In 1977, the first GPS satellite was launched. It was launched by the developers of the program itself - the Americans. The GPS system was used until 1983 only by the military, and after that it became available to ordinary people.

Many owners of GPS-navigators noticed that in the locations of a large number of tall buildings and buildings, the device is looking for satellites for quite some time. The solution to this problem was the A-GPS system.

Consider what A-GPS is and when it is needed.

Given that this system is quite young (its debut came in 2001), the question of what A-GPS is, is currently relevant. It, like GPS, was developed in the USA. A-GPS is a system that accelerates the work of the GPS receiver in determining the coordinates. This system uses the signal emanating from the cell towers, respectively, than in the visibility of the device of these towers more, the higher the accuracy of determining the distance. With each satellite search, A-GPS provides the navigator with the location of the closest satellites via dedicated servers. Learning what A-GPS is , it becomes clear that with its help, the work of the GPS-navigator will become much more effective. After all, thanks to the joint operation of the two devices, positioning is accelerated at times.

Determining what A-GPS and GPS-navigator is, you should pay attention to the GPS-tracker. This device is intended for observation through the satellite behind the movement of the object on which this small electronic device is "installed". GPS-tracker is a kind of "bug", which can be hidden without problems, for example, in the car's interior, and thus to track all further movements of this object.

Basically, GPS-tracker includes 2 devices: GPS-receiver and GSM-modem. Using a satellite system, it is able to determine the coordinates of the traffic and the speed, and then transmit this data to the observer via the GPRS channel (via cellular communication).

Having learned what a GPS-tracker is, let's try to understand what this device is for. Its main task is to control the location of the object. It will perfectly help, for example, in the situation with car theft. Also with this device you can track the route of your second half or child. In practice, you need to have a mobile phone or a computer. The data transmitted by the GPS tracker is superimposed on the electronic map, so that the location address of the object becomes known.

In size, the GPS tracker is smaller than a cell phone. The device has a battery, which is charged both from the cigarette lighter and from the usual electrical network. Some models are equipped with alarm buttons.

Having learned from our article all about navigators, you can safely purchase this device, because in a modern city, especially if it's a metropolis, it's simply impossible to do without this technique.