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Indoor location method based on fingerprint calibration and fingerprint conversion

An indoor positioning and fingerprint technology, applied in indoor positioning based on fingerprints, indoor positioning based on fingerprint calibration and fingerprint conversion, can solve the problem of different fingerprint dimensions, and achieve the effect of reducing positioning performance

Active Publication Date: 2017-10-24
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Aiming at the defects or improvement needs of the prior art, the present invention provides an indoor positioning method based on fingerprint calibration and fingerprint conversion. Different dimensions of fingerprints and different signal strengths of the same AP at the same location to further improve the positioning accuracy of mobile terminals

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  • Indoor location method based on fingerprint calibration and fingerprint conversion
  • Indoor location method based on fingerprint calibration and fingerprint conversion
  • Indoor location method based on fingerprint calibration and fingerprint conversion

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Embodiment Construction

[0124] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0125] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, ...

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Abstract

The present invention discloses an indoor location method based on fingerprint calibration and fingerprint conversion. The method comprises: dividing a plane object area into a plurality of mutually nonoverlapping location areas at first, and dividing each location area into grids with similar sizes; employing different terminal devices to perform multiple sampling of signal intensity in each grid, and obtaining a grid support fingerprint set; in each grid, calibrating unreceived signal intensities in different terminal devices; employing different frequency band thresholds to perform AP screening of APs of different frequency range, and obtaining a grid fingerprint; combining the grid fingerprint and a test fingerprint, and changing the modes of the grid fingerprint and the test fingerprint; and performing location through adoption of the NN algorithm. The indoor location method based on fingerprint calibration and fingerprint conversion can improve the location accuracy of a heterogeneous device, reduce the fingerprint workload and reduce the fingerprint collection workload.

Description

technical field [0001] The invention belongs to fingerprint-based indoor positioning technology, in particular to an indoor positioning method based on fingerprint calibration and fingerprint conversion, which is used in the technical field of communication and wireless network. Background technique [0002] In recent years, with the explosive proliferation of mobile devices and the popularity of social networks, location-based services (Location Based Service, LBS) have become an indispensable part of our daily life. Indoor location-based information services mainly include indoor navigation, logistics management, commodity promotion, information push services, etc. At present, a variety of indoor positioning technologies have been developed, such as WiFi positioning, ultrasonic positioning, Bluetooth positioning, etc. Different positioning technologies have different average positioning accuracy and require different hardware devices. Among them, since most areas of the c...

Claims

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Application Information

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IPC IPC(8): G01S5/02H04W4/04
CPCG01S5/0252
Inventor 王邦叶炎珍
Owner HUAZHONG UNIV OF SCI & TECH
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