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Global seamless locating method based on GPS, fourth-generation mobile communication network and WiFi

A mobile communication network and the fourth technology, applied in the field of global seamless positioning, can solve the problems of inability to locate and the low accuracy of GPSONE indoor positioning, and achieve the effect of solving the low accuracy

Inactive Publication Date: 2013-11-13
王东林
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a global seamless positioning method based on GPS, the fourth generation mobile communication network and WiFi, solve the problem that GPS cannot be positioned in a harsh environment, and simultaneously solve the problem of GPSONE indoor positioning accuracy low degree problem

Method used

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Examples

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Embodiment 1

[0017] The present invention is based on the global seamless positioning method of satellite positioning system GPS, China Mobile's fourth generation mobile communication network TD-LTE (OFDM positioning) and WiFi wireless network, comprising the following steps:

[0018] S1: Receive mixed signals from GPS and the base station of the fourth-generation mobile communication network, and detect the GPS carrier-to-noise ratio. If the GPS carrier-to-noise ratio is greater than the preset threshold T1, enter the GPS positioning program, obtain the positioning result, and report the location of the target; otherwise Go to step S2;

[0019] S2: If the GPS carrier-to-noise ratio is lower than the preset threshold T1, but greater than the preset threshold T2, enter the AGPS positioning program and obtain the positioning result L1; at the same time, detect the fourth-generation mobile communication network base station signal carrier-to-noise ratio, if its carrier When the signal-to-nois...

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Abstract

The invention relates to a global seamless locating method based on a GPS, a fourth-generation mobile communication network and a WiFi. Target location is conducted by automatically selecting one of a GPS locating method, a GPS and fourth-generation mobile communication network combined locating method, a fourth-generation mobile communication network locating method, a fourth-generation mobile communication network and WiFi network combined locating method and a WiFi wireless network locating method, so that the effect of the optimal locating precision is achieved. Signal intensity of a receiver is ensured through the combination of the GPS locating, the fourth-generation communication network base station locating and the WiFi wireless network locating, accordingly, the global seamless locating is achieved, the problem that locating can not be conducted by the GPS under the severe environment is solved, and the problem that the GPSONE indoor locating precision is not high is solved at the same time.

Description

technical field [0001] The invention relates to a global seamless positioning method based on GPS, the fourth generation mobile communication network and WiFi. Background technique [0002] The GPS global satellite positioning system realizes target positioning and terminal navigation in any "good" environment at any time in the world. It has been widely used in the world and plays a very important role in modern society. However, because the satellites in the GPS positioning system are far away from the ground and the limited transmission power that solar energy can provide, the GPS positioning system cannot work normally in harsh environments, such as indoors, urban areas with tall buildings, tunnels, underground, etc. . [0003] At present, in order to make up for the defects of GPS positioning, GPSONE proposed by Qualcomm is a global positioning technology combining GPS global satellite positioning system and third-generation CDMA communication network. GPSONE adopts c...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W64/00G01S5/00
Inventor 王东林曹辉
Owner 王东林
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