Indoor positioning method and device based on environmental backscattering

A backscattering and indoor positioning technology, applied in positioning, measuring devices, instruments, etc., to achieve the effect of avoiding manual maintenance, saving the number of layouts, and getting rid of dependence

Active Publication Date: 2018-01-05
西安茂德通讯科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0007] In summary, none of the above methods is suitable for indoor positioning with complex environments, easy portability, and high real-time requirements.

Method used

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  • Indoor positioning method and device based on environmental backscattering
  • Indoor positioning method and device based on environmental backscattering
  • Indoor positioning method and device based on environmental backscattering

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Embodiment Construction

[0052] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0053] The radio frequency source in the embodiment can be a base station around the environment to be located, the tag is a communication device without power supply itself, and the mobile terminal is a device with read and write functions.

[0054] refer to figure 1 , an indoor positioning method based on environmental backscattering, comprising the following steps:

[0055] In the first step, the radio frequency source RFs transmits a signal: the signal frequency band is within the tag detection frequency band, which can be an indoor WIFI signal, or an outdoor base station or other equipment in a specific frequency band;

[0056] The radio frequency source is not limited to one, and there may be multiple radio frequency sources, and only the signal frequency band emitted by the radio frequency source is required to be within the detection frequenc...

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Abstract

The invention discloses a wireless indoor positioning method and a device based on environmental backscattering. The method comprises steps: a radio frequency source RFs transmits signals; a label performs environmental backscattering; a mobile terminal Q detects the received label signals; and three-dimensional positioning on the mobile terminal is finally carried out. The device comprises the radio frequency source, the label and the mobile terminal. The environmental backscattering technology is used to be combined to multi-antenna label beam scanning, indoor and real-time three-dimensionalpositioning is realized, and the method and the device have the advantages of low power consumption, good anti-multipath effects are good; the safety is high; the system complexity is low; and the like.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor positioning method and device based on environmental backscattering. Background technique [0002] With the rapid increase of data services and multimedia services, people's demand for positioning is increasing. Especially in complex indoor environments, such as airport halls, supermarkets, libraries, underground parking lots, etc., it is often necessary to determine whether the mobile terminal or its Indoor location information of holders, facilities and objects. However, the mature outdoor positioning technology based on GPS and other global navigation satellite systems is difficult to be used for indoor positioning because satellite signals are difficult to penetrate buildings and the indoor environment is complex and changeable. [0003] At present, due to the limitations of positioning time, positioning accuracy and complex indoor environment, relativel...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/14
Inventor 王衍文王世芳王渭森刘文豪
Owner 西安茂德通讯科技有限公司
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