User Guide

Glossary
Dead Reckoning- See GPS / Dead Reckoning Module.
DOP- Dilution of Precision. A collection of GPS data: factors like relative positions of
satellites in the sky, latitude and longitude, car location and time of day, that pinpoint an
accurate destination point.
Freeway Auto-Pop- A selectable feature that enables freeways, freeway exits and streets to be
displayed when the car is on a freeway in lieu of map modes or turn-by-turn mode. It pops to
freeway mode when on freeway and automatically goes to map mode or turn-by-turn mode
when you exit freeway.
Freeway Mode- A navigation display mode where upcoming freeway and street exits are
viewed during a calculated route on a freeway.
GPS- Global Positioning System that utilizes a network of satellites to pinpoint your vehicle
position anywhere in the world.
GPS / Dead Reckoning Module- A USB Navigation Unit; UDR12 is attachable to the Joyride™
unit and required for receiving GPS satellite signals, gyro direction and vehicle speed pulse
(signal) inputs for accurate car positioning.
GSM - Global System for Mobile communications. The Joyride™ system interacts with GSM
mobile phones.
H-up - The “Heading-Up” direction of the map in conjunction with the “nose” (front) of the
car. The map turns in the direction of the front end of the car. See N-up.
59
Glossary
AccuRoute Plus™ Navigation for