Wi-Fi Indoor Positioning Method Based on Evidence Synthesis Rule Optimization

An indoor positioning and rule-based technology, applied in specific environment-based services, wireless communications, electrical components, etc., can solve problems such as poor robustness, complex indoor scenes, and effective estimation of signal propagation distances affecting positioning systems, and achieve increased stability performance and reliability, and optimized precision

Active Publication Date: 2022-04-29
CHONGQING UNIV OF POSTS & TELECOMM
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  • Description
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Problems solved by technology

[0004] However, because indoor scenes are usually very complex, indoor signals are usually diverse, which affects the effective estimation of the signal propagation distance by the positioning system, resulting in poor performance and poor robustness of the positioning system.

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  • Wi-Fi Indoor Positioning Method Based on Evidence Synthesis Rule Optimization
  • Wi-Fi Indoor Positioning Method Based on Evidence Synthesis Rule Optimization
  • Wi-Fi Indoor Positioning Method Based on Evidence Synthesis Rule Optimization

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Embodiment Construction

[0075] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0076] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a Wi-Fi indoor positioning method optimized based on evidence synthesis rules, and belongs to the technical field of indoor positioning. First, resume the set of relationship states between each reference point and the target location, and use the boundary error test method to correct the RSS sample mean; secondly, use the normalized signal propagation distance distribution estimation as the basic probability assignment of D‑S evidence theory to establish The initial trust of the relationship between each reference point and the target location; based on the D‑S evidence synthesis rule, the multi-source RSS information is fused to obtain a comprehensive trust estimate for each reference point. At the same time, the trust based on the D‑S evidence theory is used The function selects the ideal reference point; according to the decision rule of the trust function, the ideal reference point with a high degree of trust is selected as the ideal matching reference point, and the target position is estimated by combining the centroid algorithm. The invention optimizes the accuracy of the positioning system on the one hand, and increases the stability and reliability of the positioning result on the other hand.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and relates to a Wi-Fi indoor positioning method optimized based on evidence synthesis rules. Background technique [0002] In recent years, with the surge in demand for indoor Location-based Service (LBS), indoor positioning systems have played an important role in many application scenarios, such as large storage warehouses, underground shopping malls, garage navigation, etc. Pedestrian localization and navigation in . Because it is difficult to collect satellite signals such as Global Positioning System (GPS) and Beidou continuously and without fluctuations in the indoor environment, because satellite positioning systems usually cannot meet the positioning performance requirements of indoor location services. In addition, common infrared (Infrared Ray, IR), Bluetooth, ZigBee [4], ultra-wideband (Ultra Wide Band, UWB) indoor positioning systems, etc. usually need to deploy many addi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/33H04W64/00
CPCH04W4/33H04W64/00
Inventor 周牧李欣玥王勇谢良波聂伟杨小龙
Owner CHONGQING UNIV OF POSTS & TELECOMM
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