Indoor positioning method based on bluetooth position fingerprints

An indoor positioning and fingerprint technology, applied in the field of positioning, to achieve the effect of reducing workload, reducing the burden of database construction, and improving positioning accuracy
CN105301558AActive Publication Date: 2016-02-03济南东朔微电子有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
济南东朔微电子有限公司
Publication Date
2016-02-03

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Abstract

The invention relates to an indoor positioning method based on bluetooth position fingerprints. High-dimensional spatial spectral information and environmental information related to channel information are utilized, and steady spatial spectral fingerprints are extracted by utilizing principal component analysis and other means. The effect of resisting indoor multipath interference is enhanced in matching positioning, and positioning precision is enhanced. The fingerprints have better effect of resisting multipath interference under the indoor multipath environment, and the random variable is more stable. Fingerprint database updating is completed by periodic training data positioning error judgment. If the error is greater than a preset threshold value, dimension reduction processing is performed from an existing multidimensional spatial spectral fingerprint database and a few randomly acquired positioning fingerprints of the present moment by utilizing the principal component analysis method or a manifold learning method so that a fingerprint database of the present moment is obtained; and if the error is smaller than the preset threshold value, positioning is performed by using the previous fingerprint database. Therefore, repeated database establishment does not need to be performed at the positioning moment, and thus the burden of database establishment can be reduced to a great extent.
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Description

technical field

[0001] The invention relates to an indoor positioning method based on a Bluetooth position fingerprint, belonging to the technical field of positioning. Background technique

[0002] In recent years, with the rapid development of the economy, more and more large-scale buildings and underground shopping malls have been constructed in large and medium-sized cities. People spend most of their time living and working in indoor environments such as buildings, shopping malls, and restaurants. High-precision indoor positioning technology can effectively improve work efficiency and quality of life, and the demand for indoor positioning services is increasing. As a short-distance wireless communication technology, Bluetooth is mature, cheap, and cost-effective, and has become a standard configuration on mobile devices. Among many indoor positioning technologies, the indoor positioning technology based on location fingerprint can achieve relatively ideal positioning a...

Claims

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