Can the GPS locator continue to be used after replacing the SIM card?

The GPS locator can be used normally after replacing the SIM card.

The three indispensable elements that GPS locator can realize positioning are:

1, GPS terminal equipment (also known as GPS locator).

2. Transmission network (usually GPRS).

3. Position display platform (GPS positioning system).

The spatial distribution of GPS consists of 24 working GPS satellites, which together form a constellation of GPS satellites, of which 2 1 is a navigation satellite and 3 are active backup satellites. These 24 satellites are distributed in six orbits around the earth with an inclination of 55. The operating period of the satellite is about 12 sidereal time. Every GPS working satellite will send out navigation and positioning signals. GPS users use these signals to work.

The GPS locator is equipped with SOS emergency alarm button. When the owner or user encounters an emergency, he can press the SOS button twice, and the locator will send alarm information to the number specified by the user and call for help, and upload it to the server at the same time.

China's first voice MMS GPS locator is listed, with built-in national map data, without background support. It combines GPS global positioning system, GSM communication technology, embedded voice broadcast technology, GIS technology, GIS search engine, image processing technology and image transmission technology to directly reply the Chinese address of the terminal, MMS or voice broadcast geographical location.

GIS/ GPS can accurately obtain the information of transportation vehicles, and then make it available to both enterprises and customers through the Internet, thus making the operation and business of the whole enterprise transparent and laying the foundation for collaborative commerce. The physical architecture of logistics enterprise information platform is shown in the figure. However, the integration of geographic information system (GIS), satellite positioning system (GPS), wireless communication (WAP) and Internet technology (Web) and their application in the field of logistics and supply chain management information technology are not fully mature in China.