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A single-station high-precision three-dimensional positioning method based on multi-antenna

A three-dimensional positioning, multi-antenna technology, applied in the direction of antennas, electrical components, etc., can solve the problem of high cost, achieve the effect of suppressing the influence of multipath, wide application prospects, and improve estimation accuracy

Active Publication Date: 2021-07-09
成都旸谷信息技术有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the relatively mature ultra-wideband positioning technology UWB with the highest positioning accuracy can usually achieve a positioning accuracy of ten centimeters. However, to achieve three-dimensional positioning, multiple receiving base stations need to be deployed at the same time, and the cost is relatively high.

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  • A single-station high-precision three-dimensional positioning method based on multi-antenna
  • A single-station high-precision three-dimensional positioning method based on multi-antenna
  • A single-station high-precision three-dimensional positioning method based on multi-antenna

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing:

[0026] Aiming at the above shortcomings of the existing technology, the present invention proposes a low-cost, high-precision single-station three-dimensional positioning technology applicable to various signal systems such as WiFi, 5G, and UWB. Based on a multi-antenna array, the three-dimensional Angle of arrival and propagation delay realize high-precision single-station three-dimensional positioning.

[0027] The sample of the antenna array receiving signal vector adopted by the present invention is generally expressed as: an array of arbitrary distribution (2D plane or 3D) of M array elements, and a narrowband signal s(t) passes through L multipath reflection far-field incident arrays, when The delays (TDs) are t 1 ,L,t L , the incident azimuth is q 1 ,L,q L , the pitch angle is f 1 ,L,f L . Then the mth array element at time t n The output of can be expressed ...

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Abstract

The invention discloses a single-station high-precision three-dimensional positioning method based on multiple antennas. Based on multiple antennas, the invention uses a joint measurement method of pitch angle, azimuth angle, and time delay to estimate positioning parameters. By combining pitch angle, azimuth angle, and time delay Estimation separates multipath signals that have a greater impact on positioning accuracy, thereby suppressing the impact of multipath, improving the estimation accuracy of positioning parameters, and further realizing high-precision single-station three-dimensional positioning. This method is applicable to various signal systems such as WiFi, 5G, and UWB, and can realize low-cost single-station 3D positioning. application prospects.

Description

technical field [0001] The present invention relates to a wireless signal single-station three-dimensional positioning method in the technical field of array signal processing, in particular to a single-station positioning method based on multi-antenna arrays for joint estimation of wireless signal three-dimensional arrival angle (azimuth angle, elevation angle) and time difference, It is used for 3D angle of arrival and transmission delay estimation of signal sources in the case of multi-antenna arrays at the base station to achieve single-station 3D positioning. Background technique [0002] In recent years, indoor positioning and location-based services have shown a huge market space, and have been widely used in indoor navigation, on-demand marketing in shopping malls, smart cities, security monitoring management, and loss prevention. According to a recent report released by market research firm ABI, by 2018, the global indoor positioning market will reach $5 billion. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q3/22
CPCH01Q3/22
Inventor 文飞宋文斌魏新柳祚飞郑望贤彭笛
Owner 成都旸谷信息技术有限公司