Car Navigator
The operation of the vehicle navigator mainly relies on the Global Positioning System (Global Positioning System, GPS for short). The car navigator is mainly composed of a chip, an antenna, a processor, a memory and a screen.
Product Features
At the same time, the corresponding detection sensors are installed on the car, and the GSM network communication function of the car GPS positioning can also be used to send the anti-theft alarm information to a third party, or send the alarm call and text message directly to the owner's mobile phone to complete the car. GPS anti-theft alarm. It can be seen here that the GSM network part of the vehicle GPS positioning is actually a smart phone, which can communicate with a third party, and can also send information such as vehicle robbery, driver robbery, kidnapping, etc. to the third party.
Therefore, car GPS positioning is positioning, anti-theft, and anti-robbery.
Similar to the car GPS terminal, there are positioning mobile phones, personal locators, etc. Because GPS satellite positioning needs to use third-party positioning services, it has to pay varying monthly/yearly service fees.
All current GPS positioning terminals have no navigation function. Because additional hardware and software are required, the cost increases.
The car GPS advertisements we see on TV are completely different from the above car GPS. It is a GPS navigation product. When navigation is required, the first positioning is the starting point of the navigation, which is different from the real GPS positioning. It cannot transmit the positioning information to the third party and the holder, because the navigator Mobile phone functionality is missing. For example, if you put the navigator in the car, your friend borrowed the car and drove away, and the navigator can't send you information, then you can't find the location of the vehicle. So the navigator cannot locate.
You said I bought a navigation phone, right? Think about it, you put the navigation phone in the car, and now the car is stolen, will that phone call and text you or a third party by itself? It needs people to operate. Therefore, the current navigation terminals do not have a positioning function.
The navigation terminal can navigate the route, so that you do not get lost in unfamiliar places, draw a route to get you to the destination, tell you your current location, and surrounding facilities, etc.
Judge the pros and cons
1. The chip of the satellite signal receiving module.
This is an important component that determines the accuracy and speed of GPS. Choosing a backward chip means that when your car reaches an intersection, you need to wait for GPS to tell you how to go before you can drive. If you were driving at normal speed, you would have to go back to the original line from time to time to correct mistakes. Now the first to third generation chips are in use on the market, and most dealers will not tell you the chip performance of their products when they sell GPS. This is like when you go to buy a mobile phone, people will not tell you what the CPU of the mobile phone is, because once they tell you that the CPU version of the mobile phone is very low, which will affect the speed of the mobile phone, will you still buy this mobile phone?
2. The speed at which the map is updated.
Now the speed of construction and development in various places is very fast. If the manufacturers do not provide map update services in time, your GPS will not be of much use. Of course this, GPS sales staff will not take the initiative to tell you. The salesperson will tell you how many places and how many towns the maps installed in its GPS can cover. But think about it, if the map is not updated, it will not take long for the map displayed by your GPS to be very different from the actual one.
3. Time to provide free updates.
Generally, the GPS produced by informal enterprises uses cracked maps and will not provide update services. There are also businesses that use genuine maps but do not offer updates. There are also some companies that use genuine maps, but additional charges are required for map updates. There are also companies that offer you free updates of maps for a long time. It should be known that the ratio of the price of the GPS navigator hardware itself in the market to the price of the genuine map software is about 1:3 or 1:6, which means that the hardware is cheaper than the software. Therefore, when choosing a GPS navigator, it is necessary to look at both the hardware and the software. Otherwise, the GPS you bought will be useless.