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Antenna array-based wireless positioning method

An antenna array and wireless positioning technology, which is applied in the field of network communication, can solve problems such as environmental requirements and preset dependence, and achieve the effects of reducing design costs, improving efficiency, positioning accuracy and positioning efficiency

Inactive Publication Date: 2017-05-24
HANGZHOU ASCEND TECH
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This patent application aims at many problems of the above-mentioned WiFi positioning method, and provides a wireless positioning method based on an antenna array. By using the built mobile antenna array, it provides a more convenient and low-cost positioning service, and solves the current wireless WiFi positioning method. Requirements and pre-set dependencies

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Embodiment Construction

[0022] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Relative steps, mathematical expressions and numerical values ​​of components and steps set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0024] At the same time, obviously, for the convenience of description, the sizes of the various parts in the drawings are not drawn according to the actual proportional relationship.

[0025] In addition, the technical features involved in different embodiments of the present invention described bel...

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Abstract

The present invention discloses a wireless positioning method based on an antenna array. Specifically, a 802.11a / b / g / n wireless local area network communications protocol-based wireless network is built by using a wireless access point, or an existing wireless network in the environment is used. The antenna array scans a currently positioned WiFi signal based on the wireless network so as to acquire positioning information of the wireless access point. According to the method, wave direction of arrival (DOA) estimation is acquired through a MUSIC algorithm based on the antenna array, and a positioning distance is acquired through an RSSI algorithm based on the antenna array. Through adoption of the wireless positioning method based on the antenna array, multiple points are not set in advance, a single device antenna array can acquire positioning information, so that WiFi positioning depends less on environment, and the design costs are lowered. Positioning accuracy and positioning efficiency of antenna array-based positioning are improved, and different antennas in the array are selected to work according to signal incident directions so that the efficiency is improved.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a wireless positioning method based on an antenna array. Background technique [0002] At present, as a wireless data communication method, WiFi (Wireless Fidelity, wireless fidelity) has been widely used, and there is an increasingly strong demand for using wireless WiFi signals to locate mobile terminals. [0003] The existing wireless WiFi positioning technology is mainly divided into two positioning methods: the propagation model method and the location fingerprint method. The propagation model method has been widely used because it saves a lot of manpower and material resources compared with the location fingerprint method. Common features include: Signal strength (Received Signal Strength Indicator, RSSI), time of arrival (Time of Arrival, TOA), angle of arrival (Angel of Arrival, AOA), time difference of arrival (Time Difference of Arrival, TDOA), between cost and appl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00G01S3/12G01S5/10
CPCH04W64/003G01S3/12G01S5/10H04W64/006
Inventor 李友段叶力建
Owner HANGZHOU ASCEND TECH
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