With the popularity of the navigator, more and more car owners used by GPS navigation system to set the route, arrived at the destination in its help. But some people seem to be in "the navigator, not walk" dilemma. Your navigator is reliable? How to avoid navigation but go wrong?
The number of hours went astray, "arch-criminal navigator"
Mr. Gong has a modern car business, holiday often tours to his car travel, at least a month to run three two trip to Guilin. Qingming small holiday, Mr. Gong is in the familiar city planted a big somersault. 6, 3 pm, a trip to Guilin county resources bajiaozhai, Mr. Gong drove back to Yangshuo Xingping town group. Is expected to take more than 3 hours away, because of the use of the wrong route navigation, until 1 pm, Mr. Gong a line of people in the Hotel ARRIVAL.
In fact, such as Mr. Gong encountered such a situation no longer road navigation in his minority. In fact, according to the 4S shop staff, if not the regular manufacturers of products, map upgrade will be a problem. Many small brand vendors to sell or not after the navigator, responsible for electronic map update, or use the "cracked version of" electronic map upgrade, also is piracy map, which leads to the occurrence of the phenomenon of lead astray.
The navigator on the market beyond count, different functions, prices are also very much to the interval. But according to the provisions of the State Bureau of Surveying and mapping, only the enterprise can produce GPS map map class mapping qualification, the manufacturers of the GPS map, say piracy is strictly.
At present, the National Mapping Bureau only to NavInfo, Gao De, Kai Lide, etc., the imagination cityonmap issued more than 10 manufacturers of "China navigation electronic map qualification certificate", only the built-in electronic map of these manufacturers, vehicle navigation system is the "driving tour guide to be worthy of the name", in order to ensure the precision of relative navigation.
Check whether your reliable vehicle navigation
As a guiding tool navigator, the most important of course is the accuracy of the data, but according to insiders, the current car navigation industry do the real map is very few, most of the third party data, which may lead to a number of map company according to the number of companies sold to the same, the error may occur in a number of different map query platform. In addition, the navigation map data update frequency also tend to be newer than drawing company data, it will lead to the general non level road and residential road one one. It is difficult to verify.
So the use of vehicle navigation, regular update, navigation data, preferably before the trip or look at the map, there is general direction. The navigator provides route information as a reference, do not rely entirely on the navigation way "". Before the trip, for insurance purposes, can also in some forum self driving route Master query provides the answer and control.
In addition, some motorists may buy used car navigation technology known as the guide, then this is what inertial navigation technology, inertial navigation system SINS really?
In fact, GPS obstacles appear because of interference signal is weak or inaccurate when circumstances have occurred. Not only in which we often meet in the tunnel, in the downtown area, high refraction, reflection GPS signal is lined will drift. On the viaduct complex or in a wooded path, the signal will be covered by GPS, the signal will appear the same disorder. The effective way to solve this problem is the inertial navigation technology.
In the process of driving, navigation is always based on inertial fusion signal based, GPS satellite signal is only auxiliary correction, when the lost GPS signal or GPS signal is not good, the navigator can continue navigation, navigation technology can be used well for ten minutes, or even longer. So, if you used to guide navigation, you through the tunnel, mountains and other GPS signal interrupt, can't you accurate navigation, such as through the tunnel, the car signal is displayed to move on, you may not use the real inertial navigation system.
Other vehicle navigation system application
In fact, GPS navigation for many functional interfaces, although some products will be omitted, but there are still a lot of products in the market to add some function. For example, with FM FM transmitting function GPS navigation is the sound through the FM radio to the sound, that is to say if your car audio system not perfect, as long as there is a radio function you can enjoy music, or directly through the expansion of car audio navigation voice.
With Bluetooth function GPS navigation products can be connected via Bluetooth and mobile phone GPS navigation, in this way, we can use GPS navigation as mobile phone hands-free Bluetooth, no Headset users can through this way in the running process of communication with others.
In addition, there are many products on the market with a video input function of the product, with a video input function can access reversing video camera, rear sight when reversing by writing modification using on-board GPS navigator screen. This should be a lot of motorists, especially for parking is not good personnel function.