Car GPS Navigation
An automotive navigation system is a satellite navigation system designed for use in automobiles. It typically uses a GPS navigation device to acquire position data to locate the user on a road in the unit's map database. Using the road database, the unit can give directions to other locations along roads also in its database. Dead reckoning using distance data from sensors attached to the drivetrain, a gyroscope and an accelerometer can be used for greater reliability, as GPS signal loss and/or multipath can occur due to urban canyons or tunnels.
Aftermarket GPS system
A number of manufacturers supply aftermarket GPS navigation devices that can be integrated permanently into the vehicle. A typical location for such an installation is the DIN slot for the radio / tape / CD. However, in extreme cases, the dashboard may also be remodeled to accommodate the unit.
This approach can be considered a tradeoff between the previous two options. Benefits include a more secure and better cosmetic finish than a portable device, and lower cost compared to the installation of an original factory-supplied GPS.
Wholesale GPS Navigation from China Directly
ePathChina can supply lots of different types GPS Systems and GPS Tracker now, all our Navigation Devices have 1 year warranty. ePathChina doesn't have MOQ limit and any quantities is accepted. Please log in, larger quantities will have larger discount, wholesale Auto GPS Device from China now.
Please Note: We can't guarantee the road map come with GPS System have 100% accuracies, in fact the map is Pirating.
