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A research method for modeling and correction of uwb base station antenna phase center deviation

An antenna phase center, base station antenna technology, applied in positioning, radio wave measurement system, advanced technology and other directions, can solve the problem of base station antenna phase center deviation, etc., to achieve accurate positioning results, rigorous mathematical models, and improve positioning accuracy.

Active Publication Date: 2022-07-08
TONGJI UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a UWB base station antenna phase center deviation modeling and correction method, which can deal with the problem of base station antenna phase center deviation in applications such as UWB indoor navigation and positioning

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  • A research method for modeling and correction of uwb base station antenna phase center deviation
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  • A research method for modeling and correction of uwb base station antenna phase center deviation

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[0035] The specific embodiments of the present invention will be described in more detail below with reference to the schematic diagrams. The advantages and features of the present invention will become apparent from the following description and claims. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

[0036] refer to figure 1 , in a preferred embodiment of the present invention, a research method for UWB base station antenna phase center deviation modeling and correction includes:

[0037] Step S1: determine the basic model of UWB base station antenna phase center deviation correction;

[0038] Specifically, refer to figure 2 , step S1 includes:

[0039] Step S11: Analyze the influencing factors of the antenna phase deviation of the UWB base station. Consult the literature and refer to the...

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Abstract

The invention relates to a research method for UWB base station antenna phase center deviation modeling and correction. The deviation of the antenna phase center is caused by the inconsistency between the electrical center and the geometric center of the receiving antenna. In high-precision GNSS positioning, the influence of the receiver antenna phase center error is generally considered, and there are relatively mature error correction models. But in the UWB positioning solution, the antenna phase center deviation has not been taken into account. Today, UWB positioning has reached an accuracy of 5-10 cm or even higher, and the antenna phase center deviation error has become an important factor restricting its positioning accuracy. Therefore, referring to the GNSS antenna phase center correction method, the present invention proposes an altitude-dependent UWB antenna phase deviation correction model, and a complete set of UWB antenna phase center deviation modeling and error correction methods. The method considers the influence of the antenna phase deviation in the UWB positioning solution, and effectively corrects this error, which makes the mathematical model of UWB positioning more rigorous, the positioning results are more accurate, and the positioning accuracy of UWB is improved.

Description

technical field [0001] The invention relates to the data processing field of ultra-wide band (UWB: ultra-wide band) indoor navigation and positioning technology, in particular to a method for correcting the deviation of the phase center of an antenna of a UWB base station. Background technique [0002] In recent years, with the development of high-precision outdoor navigation and positioning technologies such as Global Navigation Satellite System (GNSS), it has been widely used in both military and civilian fields. At the same time, high-precision navigation and positioning technology in indoor environment has also become a research hotspot of major research institutions and enterprises. Compared with outdoor positioning, the structure of indoor environment is more complex, people and obstacles are denser, and there is no stable and universal sensor system. Commonly used indoor positioning technologies include Ultra-wide band, Radio-Frequency Identification (RFID), Infrared...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02
CPCG01S5/021Y02D30/70
Inventor 李博峰刘天霞钟颖
Owner TONGJI UNIV
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