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Mobile terminal location method on the basis of electromagnetic signals and mobile terminal location device on the basis of electromagnetic signals

A mobile terminal and electromagnetic signal technology, applied in the field of communication, can solve problems such as large location update errors, achieve the effects of improving accuracy, improving scoring aggregation, and avoiding the amount of calculation

Active Publication Date: 2016-03-30
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 location method on the basis of electromagnetic signals and mobile terminal location device on the basis of electromagnetic signals
  • Mobile terminal location method on the basis of electromagnetic signals and mobile terminal location device on the basis of electromagnetic signals
  • Mobile terminal location method on the basis of electromagnetic signals and mobile terminal location device on the basis of 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 present invention relates to the communication field, and discloses a mobile terminal location method on the basis of electromagnetic signals and a mobile terminal location device on the basis of electromagnetic signals. The mobile terminal location method comprises the following steps: generating an initial particle set at the location initial moment, performing random distribution of different moving step lengths to each particle in the initial particle set; repeatedly executing the following step: updating the position information of each particle in the particle set at the previous time to obtain the current particle set; scoring the availability of each particle according to the position information of each particle in the current particle set and the signal fingerprint received at present; acquiring the moving step length of each particle which has a score higher than a first preset threshold value in the current particle set; updating the moving step length of each particle which has a score lower than the first preset threshold value according to the acquired moving step lengths. According to the invention, the moving step length being closest to the actual step length of a located person may be obtained in the location process, and is able to update the moving step length with the changing of the step length of the located person.

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 Applications(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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