Honda ACCORD HYBRID 2005 Service Manual page 2053

Global Positioning S y s t e m (GPS)
The global positioning system (GPS) enables the navigation system to determine the current position of the vehicle by
utilizing the signals transmitted f r o m the satellites in orbit around the earth. The satellites transmit the satellite
identification signal, orbit i n f o r m a t i o n , transmission time signal, and other i n f o r m a t i o n . W h e n the G P S receiver
receives a signal f r o m three or more satellites simultaneously, it calculates the current position of the vehicle based on
the distance to each satellite and the satellites position in its respective orbit.
Position detection Image with G P S satellite
Precision of G P S
The precision of the GPS varies according to the number of satellites f r o m w h i c h signals are received and the v i e w of
the sky. The precision is indicated by the color of the GPS icon s h o w n on the display.
G P S ICON NUMBER OF
S A T E L L I T E S
CONDITION DESCRIPTION
No GPS icon
s h o w n
2 or less
Impossible to detect vehicle
position
GPS function is n o r m a l . The satellite
signals received by the GPS are too f e w to
detect the vehicle position.
Square GPS icon
s h o w n w i t h
white " G P S "
3 Vehicle position detectable in
2 dimensions
The longitude and latitude of the vehicle
position can be detected. (Less precise
than detection in three dimensions)
Cube GPS icon
s h o w n w i t h
green " G P S "
4 or more Vehicle position detectable in
3 dimensions
The longitude, latitude and the altitude of
the vehicle position can be detected. (More
precise than detection in t w o dimensions)
G P S Antenna
The GPS antenna amplifies and transmits the signals received f r o m the satellite to the GPS receiver.
G P S Receiver
The GPS receiver is built in the navigation unit. It calculates the vehicle position by receiving the signal f r o m the GPS
antenna. The vehicle position and signal reception condition is transmitted f r o m the GPS receiver to the navigation
control unit to adjust vehicle position.
(cont'd)
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