sensor NISSAN 350Z 2004 Z33 Navigation Manual

WHA T IS A NA VIGA TION
SYSTEM?
ABOUT THE NAVIGATION SYS-
TEM
This navigation system combines the data ob-
tained from the vehicle (by gyro sensor) and
from GPS (Global Positioning System) satel-
lites to calculate the current location of the ve-
hicle. This position is then displayed on the
screen, allowing route guidance to a destina-
tion.
WHA T IS GPS (GLOBAL PO-
SITIONING SYSTEM)?
GPS is a system developed and operated by the
U.S. Government, covering the entire planet.
This navigation system receives three or more
different radio signals from NAVST AR (GPS
satellites), orbiting the earth 13,049 miles
(21,000 km) above ground. The data from dif-
ferent sets of signals will be trigonometrically
calculated to obtain the position of the vehicle.INFO:
The tracking center in the U.S. controls signals
transmitted from GPS satellites. This control
sometimes results in reduced accuracy or no
signal received at all in accordance with gov-
ernment requirements.
ACCURACY OF POSITIONING
The color of the GPS Indicatoron the up-
per left corner of the screen indicates position-
ing as follows:

Green: Positioning is possible and accurate

Y ellow: Positioning is possible but accu-
racy is minimal.

Gray: Positioning is not possible
INV1441
HOW DOES THE NISSAN NAVIGATION SYSTEM WORK?
2-2

INFO:
For approximately 3 or 4 minutes after system
startup, the GPS indicator
remains gray ,
even if accurate positioning is possible.
POSITIONING ADJUSTMENT
When the system judges that the vehicle po-
sition information is not accurate based on ve-
hicle speed and gyro sensor data calculations,
the system will adjust the vehicle position in-
formation using GPS signals.
RECEIVING SIGNALS FROM
GPS SATELLITES
Sometimes, satellite reception is weak. The fol-
lowing are places where signals tend to be
weak:

Inside tunnels and parking lots in structures

Areas with numerous tall buildings

Under multi-layered highways

In a dense forestVehicles in these areas may not receive GPS
signals (Indicator color: gray).
INFO:
The antenna for GPS is located in the instru-
ment panel.Do not place any objects, es-
pecially mobile phones or transceivers,
on the instrument panel. Because the
strength of the GPS signal is approximately
one billionth of that of TV waves, phones and
transceivers will decrease the strength or may
totally disrupt the signals.
DISPLAY OF GPS INFORMA-
TION
This system displays GPS information.
Please refer to “GPS information display” on
page 11-13.NOTE:
Directional guidance provided by the
navigation system does not take carpool
lane driving into consideration, espe-
cially when carpool lanes are separated
from other road lanes.
HOW DOES THE NISSAN NAVIGATION SYSTEM WORK?
2-3