2012 MAZDA MODEL CX-7 display

44
Before
UseGetting
started
Routing Routing
If Necessary
GPS is a position detecting system utilizing the signals
from GPS satellites deployed by the U.S. Department of
Defense. The Mobile Navigation System uses input from
three or more satellites and calculates the vehicle position
based on the principle of triangulation.
The positioning accuracy of the system corresponds to the
error display of the GPS which is from about 30 to 200 meters
(98 to 656 ft)
.
● If you are using the system for the first time, or if you have not used it for some time, it takes
about 5 minutes (or about 2 minutes in open areas) to calculate your vehicle’s position.
■GPS signal reception is poor in the following places.
●The GPS satellites are controlled by the U.S. Defense Department, which may intentionally
lower positioning accuracy. In such cases, there may be vehicle position deviations.
● There may be vehicle position deviations for some time until GPS signals are received after
the ignition is switched ON.
This function compares your vehicle’s tracking data with the road data on the map
disc, applies dead reckoning to determine the road you are driving on, and displays
your vehicle on that road on the map.
● Intelligent map matching addresses the following problems to achieve high accuracy in
vehicle positioning.
Position Correction for Elevated Roads.Position accuracy is improved by detecting if the vehicle is
running on or under an elevated road.
Position Correction for Parking Garages.Position accuracy is improved by detecting if the vehicle is
driving in an elevated or underground parking garage.
High-precision Gyrosensor.A gyro detects turns with an accuracy of 0.05° per second.
Combined with a speed sensor, it enables the system to
display the current vehicle position even where GPS signals
may be blocked.
● Using a spare tire in place of the regular one may cause vehicle position deviations.
● Any difference between the direction which your vehicle actually travels and that shown on
the map is automatically eliminated by azimuth correction.
GPS (Global Positioning System)
In tunnels.Among high-rise buildings.Under elevated roads. In wooded areas.
Map Matching
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45
Before
UseGetting
started
Routing Routing
If Necessary
In the following situations, your vehicle position may not be displayed correctly on the
map. But, as you keep driving, your vehicle position will be automatically corrected
utilizing map matching and GPS data.
Although you may encounter the following problems in route guide, there is nothing
wrong with the system.
Positioning Accuracy
Running on an
elevated road. Making a turn after
driving on a long
straight road.Running on a steep
mountain road.
Running on a spiral
road.Entering an intersection
where a road branches
off at a small angle.
Running on gridiron
layout of roads.Running on a
slippery road with
tire chains.Snaking on a wide
road.
When your vehicle
is on a turntable
with the ignition
switched off.After getting off a
ferryboat or vehicle
train.
Route Guide
For certain intersection shapes,
the upcoming turn or the name of
the intersection may not be
announced. For certain intersection shapes,
you may be prompted to turn right
or left when you should actually
stay on the same road. Voice guidance for the planned
route may continue even after you
have deviated from that route
such as having turned too early.
Some points where the road
divides on highways or toll roads
may not be displayed or
announced. The Intersection Zoom Map may
not always agree with the actual
shape of the intersection.
The announced distance to an
upcoming turn may differ slightly
from reality.
STOP
CAR FERRY
Left turn
ahead
In 300 m
(984 ft)
right turn
300m
0m
In 300 m
(984 ft)
right turn
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