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Mobile terminal positioning method and device based on electromagnetic signals

A mobile terminal, electromagnetic signal technology, applied in the field of communication, can solve problems such as large position update error, and achieve the effect of improving accuracy, avoiding calculation amount, and improving positioning efficiency

Active Publication Date: 2019-07-30
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, due to different users and different specific environments, the method of using empirical values ​​for step size is prone to produce large position update errors

Method used

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  • Mobile terminal positioning method and device based on electromagnetic signals
  • Mobile terminal positioning method and device based on electromagnetic signals
  • Mobile terminal positioning method and device based on electromagnetic signals

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Embodiment Construction

[0030] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0032] The first embodiment of the present invention relates to a mobile terminal positioning method based on electromagnetic signals. figure 1 It is a schematic flowchart of the mobile terminal positioning method based on electromagnetic signals.

[0033] Specifically, such as figure 1 As shown, the mobile terminal positioning method based on e...

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Abstract

The invention relates to the communication field, and discloses an electromagnetic signal-based mobile terminal positioning method and a device thereof. The positioning method in the present invention includes the following steps: generating an initial particle set at the initial moment of positioning, and randomly assigning different moving steps to each particle in the initial particle set; repeatedly performing the following steps: The position information of each particle is updated to obtain the current particle set; according to the position information of each particle in the current particle set and the signal fingerprint received at the current moment, the availability of each particle is scored; the score of the current particle set is higher than the first one. A moving step of each particle with a predetermined threshold; according to the obtained moving step, update the moving step of each particle whose score is lower than the first predetermined threshold. The invention can obtain the moving step length closest to the actual step length of the person being positioned during the positioning process, and can update the moving step length in time as the step length of the person being positioned changes.

Description

technical field [0001] The invention relates to the communication field, in particular to a mobile terminal positioning technology based on electromagnetic signals. Background technique [0002] The rapid development and popularization of smart mobile devices has led to the emergence and development of indoor (or local area) positioning technology, which mainly uses wireless communication, base station positioning, inertial navigation positioning and other technologies to integrate a set of indoor position positioning system, so as to realize Position monitoring of people, objects, etc. in indoor spaces. It has a wide range of needs and applications in many fields such as commercial applications, public safety and military scenarios. [0003] Indoor positioning is usually achieved by using a triangulation method based on RSSI (Received Signal Strength Indication, received signal strength indication) and a FingerPrint (fingerprint) method. Because the RSSI will be affected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00G01S5/00G01S5/02H04W4/029H04W4/33
CPCG01S5/0252G01S5/0294H04W4/027H04W4/33H04W4/029G01S5/0244G01S5/01H04W64/006
Inventor 沈慧张志鹏马汉波姚云蛟钱霄
Owner ALIBABA GRP HLDG LTD
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