Method and device for positioning terminal and storage medium

A terminal and terminal receiving technology, which is applied in the direction of measuring devices, satellite radio beacon positioning systems, instruments, etc., can solve the problems of incomplete synchronization of satellite signal transmission time, slow satellite search by GNSS chip, and inability of terminals to perform positioning and positioning, etc.
CN112505735AActive Publication Date: 2021-03-16TENCENT TECH (SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TENCENT TECH (SHENZHEN) CO LTD
Publication Date
2021-03-16

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Abstract

The invention provides a method and a device for positioning a terminal and a storage medium. Specifically, the invention provides a method for positioning the terminal by using a map application program on the terminal. The method for positioning the terminal comprises the following steps: acquiring Doppler observation values of a plurality of satellites at the terminal; calculating the positionof the terminal based on the Doppler observation values; calculating pseudo-range observation values from the plurality of satellites to the terminal based on the calculated position of the terminal;and correcting the calculated position of the terminal based on the pseudo-range observation values and the air pressure value of the position of the terminal. According to the method, the GNSS pseudo-range observation values and the air pressure value of the terminal are fused so that the first positioning time of a terminal map user is shortened, and the positioning precision is improved.
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Description

technical field

[0001] The present invention relates to the technical field of terminal positioning, in particular to a terminal positioning method, device and storage medium that integrate GNSS pseudo-range observation values ​​and air pressure values. Background technique

[0002] At present, the positioning software (such as map software) used on the terminal (mobile phone, vehicle terminal, etc.) mainly directly uses the positioning result of the global navigation satellite system GNSS chip on the terminal. This method can only locate the terminal after it is fully synchronized with the satellite signal, that is, after the terminal calculates the launch time of the satellite signal. When the terminal starts the positioning function for the first time or the GNSS signal is weak, the built-in GNSS chip of the terminal is slow to search for satellites and cannot completely synchronize the launch time of satellite signals. This will cause the terminal to be unable to perfor...

Claims

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