GPS Navigation receiver

　　This type of receiver is mainly used for navigation of the motion carrier, which can give the position and speed of the carrier in real time. This type of receiver generally uses C/A code pseudo -distance measurement. The real -time positioning accuracy of the single point is low, generally ± 10m, and the SA affects ± 100m. This type of receiver is cheap and widely used. Depending on the application field, such receivers can be further divided into:

　　Car type -for vehicle navigation positioning;

　　Navigation type -for ship navigation positioning;

　　Aviation type -for aircraft navigation positioning. Due to the fast running speed of the aircraft, the receiver used on aviation requires to adapt to high -speed exercise.

　　Starry type -for navigation positioning for satellites. Because the speed of satellites is as high as 7km/s, the requirements for receiving machines are higher.

　　Car model: When the GPS positioning terminal is made through hardware and software for vehicle positioning, it is called a vehicle GPS, but the positioning is not available. It also needs to pass this positioning information to the alarm center or the car GPS holder. We call it a third party. Therefore, the GPS positioning system also includes GSM network communication (mobile phone communication), and satellite positioning information is sent to third parties by SMS by SMS. Interpret SMS with a microcomputer and display the location of the vehicle on the electronic map. In this way, the car GPS positioning is achieved. GPS anti -theft alarm. It can be seen here that the GSM network part of the car GPS is actually a smartphone that can communicate with the third parties, and the vehicle can be robbed. The driver is robbed, abducted and other information is sent to the third party. Therefore, the car GPS positioning is positioned, anti -theft, and anti -robbery.

　　The market sales are very broad. It is often mentioned by everyone is ordinary civilian navigation GPS. Such GPS is mainly to locate cars and navigation. The increasingly developed road, the intricate viaducts give the driver more and more difficult to distinguish the road. Navigation car GPS does bring great convenience to the driver!

　　And today's navigation GPS also has services such as early warning of electronic eyes, querying national tourist attractions, hotels and other services. It is true that tourism has brought great convenience!

　　Similar to car GPS

　　Similar to the car GPS terminal, there are positioning mobile phones, personal positioners, etc. The GPS satellite positioning is to pay the monthly/year service fees due to third -party positioning services.

　　Now all GPS positioning terminals have no navigation functions. Because the hardware and software need to be increased, the cost is increased.

　　The car GPS advertisement we see on TV is completely different from the above -mentioned car GPS. It is a GPS navigation product. When navigation is needed, the first positioning, that is, the starting point of navigation, is different from the real GPS positioning. It cannot transmit the positioning information to the third party and the holder, because the navigator Lack of mobile phone functions. For example, if you put the navigator in the car, your friend borrows the car away, and the navigator cannot send it to you, then you cannot find the location of the vehicle. So navigators cannot be positioned.

　　You said that I bought a navigation mobile phone. If you think about it, you put the navigation phone on the car. If the car is stolen, will the phone call you or a third party to send text messages by yourself? It requires people to operate. Therefore, navigation terminals have no positioning function.

　　Navigation terminals can navigate the route, so that you do not get lost in strange places, draw the route to reach your destination, tell you your current location, surrounding facilities, etc.

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