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Research method for modeling and correcting antenna phase center deviation of UWB base station

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 the effect of tight data model and improved solution accuracy

Active Publication Date: 2018-12-21
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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  • Research method for modeling and correcting antenna phase center deviation of UWB base station
  • Research method for modeling and correcting antenna phase center deviation of UWB base station
  • Research method for modeling and correcting antenna phase center deviation of UWB base station

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

[0036] refer to figure 1 , in a preferred embodiment of the present invention, a kind of research method of 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 UWB base station antenna phase deviation. Consult the literature, refer to the GNSS antenna pha...

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Abstract

The invention relates to a research method for modeling and correcting antenna phase center deviation of a UWB base station. The antenna phase center deviation is caused by inconformity of an electrical center and a geometric center of a receiving antenna. In high-precision GNSS positioning, the influence of an antenna phase center error of the receiver is considered, and a relatively mature errorcorrection model is available. However, in the UWB positioning solution, the antenna phase center deviation has not been taken into account. Now UWB positioning has reached 5-10 cm or higher accuracy, and the antenna phase center deviation error has become an important factor that restricts the positioning accuracy thereof. Therefore, with reference to the GNSS antenna phase center correction method, the invention proposes a height angle related UWB antenna phase deviation correction model, and a set of complete UWB antenna phase center deviation modeling and an error correction method. In the UWB positioning solution, the method considers the influence of antenna phase deviation and effectively corrects the error, which makes the mathematical model of UWB positioning more precise, the positioning result more accurate, and the positioning accuracy of UWB improved.

Description

technical field [0001] The invention relates to the field of data processing of ultra-wideband (UWB: ultra-wide band) indoor navigation and positioning technology, in particular to a method for correcting phase center deviation of UWB base station antennas. Background technique [0002] In recent years, with the development of high-precision outdoor navigation and positioning technology such as Global Navigation Satellite System (GNSS), it has been widely used in military and civilian fields. At the same time, the high-precision navigation and positioning technology in the 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. Currently commonly used indoor positioning technologies include ultra-wideband (Ultra-wide band), radio-frequency identification (Rad...

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Application Information

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Patent Type & Authority Applications(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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