Bedienungsanleitung Pioneer avic-x1bt (Seite 128 von 155) (Englisch)

162189

128

Zoom out

Zoom in

Vorherige Seite

1/155

Nächste Seite

126

Appendix NAVI/AV

The accuracy of the GPS information depends on

how good the reception is. When the signals are

strong and reception is good, GPS can determine

latitude, longitude, and altitude for accurate posi-

tioning in three dimensions. But if signal quality

is poor, only two dimensions, latitude and longi-

tude, can be obtained and positioning errors are

somewhat greater.

Positioning by dead reckoning

The 3D Hybrid Sensor in the navigation system

also calculates your position. The current loca-

tion is measured by detecting driving distance

with the speed pulse, the turning direction with

the Gyrosensor, and inclination of the road with

the G sensor.

The 3D Hybrid Sensor can even calculate

changes of altitude, and corrects for discrepan-

cies in the distance travelled caused by driving

along winding roads or up slopes. Also, the navi-

gation system learns the driving conditions and

stores information in the memory; thus, as you

drive more, the precision of the positioning

becomes more accurate.

The method of positioning changes as follows

depending on whether the speed pulse of your

vehicle is detected or not:

3D hybrid mode

This is active when the speed pulse is detected.

Inclination of a road can be detected.

Simple hybrid mode

When the speed pulse is not detected, position-

ing is performed in this mode. Only horizontal

movement is detected, so it becomes less accu-

rate. Also, when the positioning by GPS is not

available, such as when your vehicle enters a

long tunnel, the discrepancy between your actual

and calculated position may become bigger.

The speed pulse data comes from the speed

sensing circuit. The location of this speed

sensing circuit depends on your vehicle

model. In some cases, it is impossible to

make a connection to it, and in such a case

we recommend that the ND-PG1 speed pulse

generator (sold separately) be used.

How do GPS and dead reckon-

ing work together?

For maximum accuracy, your navigation system

continually compares GPS data with your esti-

mated position as calculated from the data of 3D

Hybrid Sensor. However, if only the data from the

3D Hybrid Sensor is available for a long period,

positioning errors are gradually compounded

until the estimated position becomes unreliable.

For this reason, whenever GPS signals are availa-

ble, they are matched with the data of the 3D

Hybrid Sensor and used to correct it for improved

accuracy.

To ensure maximum accuracy, the dead reckon-

ing system learns with experience. By comparing

the position it estimates with your actual position

as obtained using GPS, it can correct for various

types of error, such as tyre wear and the rolling

motion of your vehicle. As you drive, the dead

reckoning system gradually gathers more data,

learns more, and the accuracy of its estimates

gradually increases. So, after you have driven

some distance, you can expect your position as

shown on the map to show fewer errors.

If you use chains on your wheels for winter

driving or put on the spare wheel, errors may

suddenly increase because of difference in

wheel diameter. The system detects the fact

that the tyre diameter has changed, and auto-

matically replaces the value for calculating

distance.

If the ND-PG1 is used or if your vehicle is oper-

ating in Simple hybrid mode, the distance cal-

culation value cannot be replaced

automatically.

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Pioneer avic-x1bt Seite 128

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Andere Handbücher von Pioneer avic-x1bt

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info