What does the location function of mobile phone mean?

Mobile phone location service, also known as mobile location service, is a value-added service that obtains the location information of mobile phone users through the network of telecom operators with the support of electronic map platform and provides corresponding services for users.

It is recognized by major operators around the world as a new revolution after short messages. It accurately calculates the data of mobile communication network through complex mathematical model, obtains the latitude and longitude coordinates of mobile users, and provides corresponding location services for users with the support of electronic map platform.

A technology or service that obtains the location information (latitude and longitude coordinates) of a mobile phone or an end user through a specific positioning technology, and marks the location of a positioning object on an electronic map.

There are two positioning technologies:

1, positioning based on GPS.

2. Base station location based on mobile operation network.

The positioning method based on GPS is to use the GPS positioning module on the mobile phone to send its own position signal to the positioning background to realize the positioning of the mobile phone. Base station positioning is to determine the location of the mobile phone by measuring the distance between the base station and the mobile phone.

The latter does not need the mobile phone to have GPS positioning ability, but the accuracy depends largely on the distribution and coverage of base stations, and the error will exceed one kilometer. The former has higher positioning accuracy. In addition, there is another way to locate in a small area by using Wifi.

Extended data

Advantages and disadvantages of mobile phone positioning:

There are many ways to locate mobile phones, and the commonly used methods are: base station positioning and GPS positioning.

1, GPS positioning:

Advantages: high positioning accuracy, free interface and global positioning.

Disadvantages: In the mobile phone application, it is necessary to turn on the mobile phone traffic and GPS functions, which consumes more power; The signal penetration ability is poor, and the thickness of clouds has an influence on the signal; Unable to locate indoors.

Positioning mode: the positioning request is initiated by the GPS terminal, and the initiative lies with the terminal. If the terminal does not want to request positioning, it can terminate by uninstalling the system pre-installed by the terminal or turning off GPS. GPS positioning is a quasi-name request, and the server cannot actively locate the position of a terminal.

Application environment: car navigation, aviation, shipping, website business services, etc.

2. Location of the base station

Advantages: high positioning success rate; Do not install software; Do not open the process; You can locate the environment where you can answer the phone.

Disadvantages: low positioning accuracy, poor positioning ability of high-rise office, and positioning depends on mobile phone SIM card.

Positioning mode: the terminal can't actively locate, the terminal device only needs a SIM card without any settings, and the server has the positioning control right, which can accurately locate the location information of a terminal device at any time.

Because the base station positioning is lost to the ground positioning, the positioning accuracy depends on the signal tower, and the high-rise office will affect the signal. The location of base station has the characteristics of mandatory location, and its port docking and location need the authorization of operators. At present, it is only authorized to enterprises and institutions.

Application environment: enterprise personnel supervision, outdoor emergency rescue, logistics.

Baidu encyclopedia-mobile phone positioning service

Baidu encyclopedia-mobile phone positioning system