Difference between base station positioning and GPS Positioning

What is GPS Global Satellite Positioning System?

Global Positioning System (GPS. Simply put, this system is composed of 24 satellites covering the world. It ensures that four satellites can be observed at any point on the Earth at any time, to ensure that the satellite can collect the longitude and latitude and height of the observation point, so as to achieve navigation, positioning, timing and other functions. This technology can be used to guide airplanes, ships, vehicles and individuals to arrive at their destinations safely and accurately along the selected routes on time.

Advantage: GPS satellite positioning is accurate and stable. It has the advantages of low environmental impact and Rapid Positioning. As long as it can receive signals from four satellites, it can locate the error within 5 meters, in China, 6 to 10 satellites can be received.

Disadvantage: The cost of GPS equipment is high, and GPS is greatly affected by the weather and location. When the weather is poor, or under the viaduct/shade, or in the corner next to a tall building, an underground garage, or an open-air lower-level garage (or simply, when you cannot see the sky), GPS positioning will be greatly affected, you cannot even perform the locating service.

What is the base station positioning system?

The base station location service is also called the Location Based Service (lbs). It obtains the location information (longitude and latitude coordinates) of mobile terminal users through the network of Telecom mobile operators (such as the GSM network ), A value-added service that provides corresponding services with the support of the Electronic Map platform, such as the dynamic location query service provided by China Mobile mobile motion zone.

Advantage: the advantage of LBS positioning is convenience and low cost because it is positioned through mobile phones. Theoretically, as long as the signal difference between the three base stations is calculated, the location of the mobile phone can be determined, and the terminal of the user needs only one mobile phone. Therefore, as long as the user's mobile phone has a signal, the location can be located at any time, regardless of the weather, tall buildings, and locations.

Disadvantage: the positioning accuracy varies with the number of base stations. The error is about 50-meters. in a remote area or a small cell phone tower, the error value may be greater.

With the increasing development of science and technology, the base station is suitable for outdoor precise positioning, while the base station is suitable for indoor positioning. The third Positioning method has emerged, that is, "satellite" + "base station ", these products are embedded with GPS chips and base station positioning technologies. They can be freely switched between the two positioning methods. When a terminal cannot find a satellite, it will be positioned as a base station, once the Star Search is successful, the robot automatically switches to the GPS location. The two technologies switch back and forth, only to bring you the most accurate location information.

Difference between base station positioning and GPS Positioning