About GPS Technology
The Global Positioning System (GPS) is a tracking and navigation system developed by the U.S. Department of Defense. The system uses 24 satellites that orbit the earth, sending out radio waves that can be picked up by GPS sensors (hardware devices for receiving data).
Normally, a GPS sensor relies on receiving signals from four satellites simultaneously to track its position. Each signal contains an identifier for the satellite that emitted it and the exact time it was emitted (to the nanosecond). GPS relies on the fact that radio waves travel at the speed of light to calculate distances and the exact location of the sensor is figured by combining the data received from three or four satellites.
Given the right conditions, a GPS sensor can identify your geographic position anywhere in the world. GPS is able to give you the latitude, longitude and elevation of your present location, as well as your road speed and direction of travel on a route.
WARNING:
CoPilot navigation instructions are only
GPS Accuracy
The GPS signal CoPilot receives from the constellation of satellites has a rated accuracy of 10 meters. This means that 95% of the time the reported location is within 10 meters (30 feet) of your exact position. CoPilot takes this location information and enhances it further by "snapping" it to our street and highway network. Occasionally, CoPilot will place you on the wrong road. If this occurs, keep driving and CoPilot will automatically correct itself and find your proper position.
At times, CoPilot's GPS tracking will be less accurate or fail to work at all because the unit is unable to receive satellite signals. However, the unit is resilient; eventually, it finds itself. Its ability to report your location is directly proportional to its ability to receive accurate
- 3 -