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Positioning method

A positioning method and a technology for positioning terminals, which are applied to electrical components, wireless communications, etc., can solve problems such as inability to locate real-time positions, and achieve the effect of improving reliability

Active Publication Date: 2013-04-24
GCI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is suitable for obtaining the moving path of the target device, but it cannot locate the position of the target device in real time

Method used

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0037] In the embodiment of the present invention, the correspondence relationship between the characteristic value of the wireless signal collected by the wireless service terminal and its corresponding location information essentially constitutes a hidden Markov model relationship.

[0038] see figure 1 , is a schematic flowchart of an embodiment of a positioning method provided by the present invention.

[0039] In this embodiment, when positioning a terminal to be positioned, the positioning method provided in this embodiment may be divided into two implementation stages of offline preparation and online real-time positioning.

[0040] Among them, the main work in the offline preparation stage includes step S101 and step S102:

[0041] Step S101: The wireless service ter...

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Abstract

The invention discloses a positioning method. A wireless service terminal collects positions of a plurality of sample points and corresponding wireless signal feature values and builds a probability distribution model of the wireless signal feature values on the positions of the plurality of sample points, wherein the number of the sample points N is a positive whole number. A Markov single-step position transition probability matrix is built. The wireless service terminal conducts a m-time positioning according to the probability distribution model and the Markov single-step position transition probability matrix, wherein m is more than or equal to 1. Further, the Markov single-step position transition probability matrix can achieve necessary updates according to practical situations. The positioning method effectively uses information of the wireless signals in the environment, achieves real-time positioning of pre-positioning terminals and further improves accuracy of the positioning.

Description

technical field [0001] The present invention relates to the technical field of positioning, in particular to a positioning method. Background technique [0002] At present, the positioning technology based on the Global Positioning System (GPS) is quite mature, and the number of GPS satellites is relatively large and evenly distributed. User receivers can observe at least 4 satellites simultaneously at any outdoor location on the earth at any time. GPS satellites ensure global and all-weather navigation and positioning services for user receivers. However, due to the complex situation on the earth's surface, GPS satellite signals are affected by factors such as atmospheric friction, forest barriers, and building occlusions, which limits the application range of GPS positioning systems to a certain extent. For example, in indoor positioning occasions, GPS is no longer applicable because the user receiver cannot receive complete GPS satellite signals. [0003] In recent yea...

Claims

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Application Information

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IPC IPC(8): H04W64/00
Inventor 容荣
Owner GCI SCI & TECH
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