HDABOB's Tech Notes:
Do you ever wonder how the Satellite Navigation system works?
Let me explain it to you...
The components of the Satellite Navigation system consist of:
Global Positioning Satellite (GPS) Antenna
Voice Control Switch
Microphone
Navigation Touch Screen
Navigation control unit
Speed Sensor
The navigation system is a method of identifying and locating points on the surface of the earth. The GPS receiver antenna receives signals from a network of 24 orbiting satellites. From the signals received from several of these orbiting satellites, the GPS unit determines the location and speed of the vehicle to within 20 feet. Signals are also received from the speed sensor and the yaw sensors inside the navigation unit. By relying on both the satellite signals and speed and yaw data, the GPS unit can determine the location and speed of the vehicle at any time, even if one signal is missing. By calculating the position of the vehicle and the desired destination, the navigation unit can determine the best route to travel to get you there. As you travel to your destination, the system provides both audio and visual information for moment-by-moment driving instructions. The navigation system can also respond to voice commands when the button on the steering wheel is depressed. The microphone on the ceiling receives voice inputs and responds. When the navigation system is giving direction, the front speakers are muted. When the talk button is depressed, all the speakers are muted, except the entertainment system headphones in the rear.
...and that's how the Satellite Navigation system works!
Next: Traction Control System
HDABOB's Mobile Service 09/15/2007