At present, even schoolchildren know what a GPS-navigator is. This is a computer and a receiver enclosed in a common case. The receiver receives signals from satellites in orbit, and the computer, in turn, decodes 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 for use by ordinary people.
Many owners of GPS navigators have noticed that in places where there are a large number of tall structures and buildings, the device searches for satellites for quite a long time. The solution to this problem was the A-GPS system.
Let's look at what A-GPS is and when you need it.
Given that this system is quite young (its debut was 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 speeds up the work of the GPS receiver in determining the position. This systemuses a signal emanating from cell towers, respectively, the greater the visibility of the device of these towers, the higher the accuracy of determining the distance. With each initial search for satellites, A-GPS provides the navigator with the location of the closest satellites through special servers. Having learned what A-GPS is,it becomes clear that with its help the work of the GPS navigator will become much more efficient. Indeed, thanks to the joint work of two devices, location determination is accelerated at times.
Having decided what A-GPS and GPS navigator are, you should pay attention to the GPS tracker. This device is designed to monitor the movement of the object via satellite, on which this small electronic device is “installed”. The GPS tracker is a kind of "bug" that can be easily hidden, for example, in a car, and thus track all further movements of this object.
Basically, a GPS tracker includes 2 devices: a GPS receiver and a GSM modem. With the help of a satellite system, he has the ability to determine the coordinates of movement and speed, and then transmit these 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 be of great help, for example, in a situation with car theft. Also, using this device, you can track the route of your secondhalves or a child. In practice, this requires a mobile phone or computer. The data transmitted by the GPS tracker is superimposed on an electronic map, due to which the address of the location of the object becomes known.
The GPS tracker is smaller than a cell phone. The device has a battery that can be charged both from the cigarette lighter and from the mains. Some models are equipped with panic buttons.
Having learned everything about navigators from our article, you can safely purchase this device, because in a modern city, especially if it is a metropolis, it is simply impossible to do without this technology.
