GPS stands for Global Positioning System. It is a worldwide space-satellite based navigational system which provides users with the accurate location information at anytime under any weather conditions. This system is formed by 24 satellites orbiting the earth.
The GPS satellites emit coded high-frequency radio signals to the GPS receivers. These radio signals contain data about the location and the exact time to the earth-bound receivers. After the radio signals are received by the GPS receivers, the computer software will decode the high-frequency radio signals and calculate the geographical location. GPS can calculate the longitude and latitude of the receiver if using only three satellites. GPS can also calculate the altitude if using four satellites.
The GPS satellites emit coded high-frequency radio signals to the GPS receivers. These radio signals contain data about the location and the exact time to the earth-bound receivers. After the radio signals are received by the GPS receivers, the computer software will decode the high-frequency radio signals and calculate the geographical location. GPS can calculate the longitude and latitude of the receiver if using only three satellites. GPS can also calculate the altitude if using four satellites.
