Manual Pioneer AVIC-F860BT (page 190 of 216) (English)

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Positioning technology

Positioning by GPS

The Global Positioning System (GPS) uses a

network of satellites orbiting the Earth. Each

of the satellites, which orbit at a height of

21 000 km, continually broadcasts radio sig-

nals giving time and position information. This

ensures that signals from at least three can be

picked up from any open area on the earth’s

surface.

The accuracy of the GPS information depends

on how good the reception is. When the sig-

nals are strong and reception is good, GPS

can determine latitude, longitude and altitude

for accurate positioning in three dimensions.

But if signal quality is poor, only two dimen-

sions, latitude and longitude, can be obtained

and positioning errors are somewhat greater.

Positioning by dead reckoning

The built-in 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 gyro sensor and inclination of the

road with the G sensor.

The built-in sensor can even calculate

changes of altitude, and correct the discrepan-

cies in the distance travelled caused by driving

along winding roads or up slopes.

If you use this navigation system with connect-

ing the speed pulse, the system will become

more accurate than no connection of speed

pulse. So you connect the speed pulse without

fail to get the accuracy of positioning.

p The position of the speed detection circuit

vary depending on the vehicle model. For

details, consult your authorised Pioneer

dealer or an installation professional.

p Some types of vehicles may not output a

speed signal while driving at just a few kilo-

metres per hour. In such a case, the current

location of your vehicle may not be dis-

played correctly while in traffic jam or in a

car park.

How do GPS and dead

reckoning work together?

For maximum accuracy, your navigation sys-

tem continually compares GPS data with your

estimated position as calculated from the data

of built-in sensor. However, if only the data

from the built-in sensor is available for a long

period, positioning errors are gradually com-

pounded until the estimated position becomes

unreliable. For this reason, whenever GPS sig-

nals are available, they are matched with the

data of the built-in sensor and used to correct

it for improved accuracy.

p If you use chains on your wheels for winter

driving or put on the spare wheel, errors

may suddenly increase because of differ-

ence in wheel diameter. Initialise the sen-

sor status and it may recover the accuracy

to normal condition.

= For details, refer to Clearing the status

on page 147.

Engb

190

Appendix

Could anyone supply a copy of the internal SD card for an AVIC F860BT - My SD card has become corrupted and the unit keeps resetting? Submitted on 16-1-2020 at 23:33
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Others manual(s) of Pioneer AVIC-F860BT

Pioneer AVIC-F860BT Quick start guide - English - 4 pages

Pioneer AVIC-F860BT User Manual - German - 244 pages

Pioneer AVIC-F860BT Quick start guide - German, Dutch - 4 pages

Pioneer AVIC-F860BT User Manual - Dutch - 232 pages

Pioneer AVIC-F860BT User Manual - French - 240 pages

Pioneer AVIC-F860BT Quick start guide - French - 4 pages

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