The GPS navigator is able to help customers accurately position the current position and calculate the itinerary according to the established destination. He will have two forms of GPS navigator to inform you how to act.show!What are the functions of the GPS navigator?How should our GPS navigator be purchased?Lets take a look with Xiaobian!
GPS is the abbreviation of English Global Positioning System.GPS started a project of the US military in 1958 and was put into use in 1964.In the 1970s, the U.S., sea, and air forces jointly developed a new generation of satellite positioning system GPS.The main purpose is to provide real -time, all -weather and global navigation services for the three major fields of land, sea and air, and some military purposes such as intelligence collection, nuclear explosion monitoring and emergency communication. After more than 20 years of research experiments, it costs $ 30 billion. By 1994The global coverage rate of up to 98%of the 24 GPS satellite constellation is completed.
Common functions of GPS navigator
The GPS navigator can help users accurately locate the current position, and calculate the itinerary according to the established destination. The GPS navigator guides the users instruments to the destination through the map display and voice prompts.Usually we use the car GPS navigator.The operation of the GPS navigator relies on GPS for short.It is composed of three parts: space satellite, ground monitoring and user receiving.
1. Map query
You can search for the destination you want to go on the operation terminal.
You can record the location information you often go to, and keep it, and you can share these location information with others.
Vaguely query your attachment or information near a certain location such as gas stations, hotels, cash machines and other information.
2. Route planning
The GPS navigation system will automatically plan a line according to the starting point and destination you set.
The planning line can set whether to pass some ways.
The planning line can set whether to avoid high -speed functions.
3. Automatic navigation
Voice Navigation: Voice provides driving information to the driver in advance to the drivers intersection, the status of the navigation system is like a guide who knows the road telling you how to drive the destination.The most important function in navigation allows you to reach your destination without watching the operation terminal.
Screen navigation: On the operating terminal, the map, the current position of the car, the speed of the driving, the distance of the destination, the planned route prompt, and the driving information prompted at the intersection.
Re -planning the route: When you do not drive according to the planned route, or go to the wrong intersection, the GPS navigation system will re -plan a new line to reach your destination according to your current position.
4. Automatic voice guides
When tourists use portable tourist navigators to approach the attractions, the navigation system shows the connotation and more vividly to the park scenic spots and display historical relics in a graphic manner, so that tourists can extend their connotation in the process of watching the scenes and exhibits.Visitors have fully appreciated the appearance of the scenic area and exhibits, and they have gained rich knowledge.
Buy GPS navigation equipment
1. Look at the effect and workmanship of the car navigation instrument.Observe whether the screen display is clear, whether the operating response is sensitive, the accuracy is good or bad, whether it is a capacitive screen or a resistance screen. The cheap product is generally a resistance screen, and the response speed is slower than the capacitive screen.See if the screen and the body joint are connected tightly, and the gap is not a good product.After turning on the side, do you have light leakage on the screen.
2. Select the navigation product with the built -in map with the "China Navigation Electronic Map Qualification Certificate".Many manufacturers now do not have the "Chinese Navigation Electronic Map Qualification Certificate", and they are also providing map navigation. Many navigation errors have occurred.
3. Is it the latest?Be careful to sell the eliminated car navigator product. It is best to ask before buying.The latest is the four -generation chip and autonomous chips, such as Garmin.
4. Finally recognize the anti -counterfeiting logo.Free upgraded genuine maps generally have anti -counterfeiting signs on the bodys body. When the owner and friends buy a car navigator, you can query according to the phone, website, etc. on the logo.

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