GPS - the need for outdoor games

The Global Positioning System satellites is 24, the control center of the group and receiving many user terminal together. The powerful system is founded in 1973. It 's the launch of the satellite began in 1989. E 'complete in 1994. The "GPS" which usually remember is that only in GPS tracker, we have in hand personally. In reality this is a very capable GPS system.

How does GPS work? The 24 GPS satellites transmit the location andTime information by means of radio voices. If the GPS receives signals from the satellite is carrying out the calculation of satellite information based on its clock and the time and location information des What is the result? It is made ​​satellites, the distance between the GPS.

Theoretically, the GPS receives signals from satellites and more than three distances from three satellites, if he had been responsible for coordinatingThe figures are obtained. The position can be achieved. If you receive more satellite signals, the more accurate coordinate data is obtained. Thus, to reach a firm position, the clear satellite signal can be obtained.

What technology can do, modified the positioning accuracy obtained with millimeter accuracy. It 's like the radio stations. GPS satellites transmit the signal as the radio, you can receive the signal with a radio. The company, which onThe GPS system will be directly responsible for the users.

The system creates the direct use in production. The standard GPS technology is also sold. Then others can also produce and use the GPS device. The technology license fee is paid by the manufacturer if you buy a GPS, the money is in hand.

It 'also different from that of the relationship between the transmitter and the radio. The GPS is a way of communication. GPSThe device is not in communication with the satellite itself. The ground station and have no knowledge of the position of the GPS receiver. It's not real, or criminal law with the satellite tracking to track the car. Only appears in the film. In other words, there was a system based on GPS.

Currently, practical GPS Tracker is a card game, implemented by a GPS receiver and a SIM card. This means that the recipient is responsible for the site. The positionsSignal is sent via message. The GPS receiver itself is a dummy. Can not be said of the situation. We already mentioned that the accuracy of a millimeter away. It 'possible that some people can not understand. Why can not I find my model? Critical parts of the GPS, including satellites, ground station and all the technologies are made ​​in USA This is the formula adopted by the American people.

One day in 1992, said that the United States all users, "ForThe interests of national security, I will not give you the exact signal. "Then the S / A-code interference. As the code available, as with the exception of the specific authorized user, the positioning of the other in the basement.

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