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Solid-state body positioning method based on time domain measurement in non-line-of-sight environment

A technology of time-domain measurement and positioning method, which is applied in the field of communication, can solve problems such as the influence of positioning accuracy of unstudied solid objects, and achieve the effect of simple method, strong robustness and accurate positioning

Active Publication Date: 2021-05-28
XIAN UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of these two methods is that it is only applicable to line-of-sight transmission, and the influence of non-line-of-sight environment on the positioning accuracy of solid objects has not been studied

Method used

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  • Solid-state body positioning method based on time domain measurement in non-line-of-sight environment
  • Solid-state body positioning method based on time domain measurement in non-line-of-sight environment
  • Solid-state body positioning method based on time domain measurement in non-line-of-sight environment

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The solid-state positioning method based on time-domain measurement in the non-line-of-sight environment of this embodiment consists of the following steps:

[0066] (1) Extract time domain measurement information

[0067] According to the following solid-state positioning model in the non-line-of-sight transmission environment, the time-domain measurement information r of the solid-state node transmitting signals to the anchor node is extracted mi :

[0068] r mi =||s i -a m ||+v mi +b mi (1)

[0069] where s i Indicates the position coordinates of the i-th solid body node in the global reference system, which is [x i ,y i ,z i ] T , i takes the value 1,2,...,N; a m Indicates the position coordinates of the mth anchor node deployed in the surrounding environment, which is [x m ,y m ,z m ] T , the value of m is 1, 2,..., M; N is the number of solid nodes, M is the number of anchor nodes, M, N are finite positive integers, and M≥4, N≥3, this implementati...

Embodiment 2

[0114] The solid-state positioning method based on time-domain measurement in the non-line-of-sight environment of this embodiment consists of the following steps:

[0115] (1) Extract time domain measurement information

[0116] According to the following solid-state positioning model in the non-line-of-sight transmission environment, the time-domain measurement information r of the solid-state node transmitting signals to the anchor node is extracted mi :

[0117] r mi =||s i -a m ||+v mi +b mi (1)

[0118] where s i Indicates the position coordinates of the i-th solid body node in the global reference system, which is [x i ,y i ,z i ] T , i takes the value 1,2,...,N; a m Indicates the position coordinates of the mth anchor node deployed in the surrounding environment, which is [x m ,y m ,z m ] T , the value of m is 1, 2,..., M; N is the number of solid nodes, M is the number of anchor nodes, M, N are finite positive integers, and M≥4, N≥3, this implementati...

Embodiment 3

[0121] The solid-state positioning method based on time-domain measurement in the non-line-of-sight environment of this embodiment consists of the following steps:

[0122] (1) Extract time domain measurement information

[0123] According to the following solid-state positioning model in the non-line-of-sight transmission environment, the time-domain measurement information r of the solid-state node transmitting signals to the anchor node is extracted mi :

[0124] r mi =||s i -a m ||+v mi +b mi (1)

[0125] where s i Indicates the position coordinates of the i-th solid body node in the global reference system, which is [x i ,y i ,z i ] T , i takes the value 1,2,...,N; a m Indicates the position coordinates of the mth anchor node deployed in the surrounding environment, which is [x m ,y m ,z m ] T , the value of m is 1, 2,..., M; N is the number of solid nodes, M is the number of anchor nodes, M, N are finite positive integers, and M≥4, N≥3, this implementati...

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Abstract

A solid-state body positioning method based on time domain measurement in a non-line-of-sight environment comprises the steps of extracting time domain measurement information, determining corrected time domain measurement information, determining a solid-state body node position in a global reference system and determining a solid-state body posture. The influence of the non-line-of-sight environment is considered, and the influence of reduction and even failure of the positioning precision of the solid body in the non-line-of-sight environment is effectively reduced. According to simulation experiments, compared with an existing divide-and-conquer method and a positive semidefinite relaxation method, the method has the advantages of being accurate in positioning, simple, high in non-line-of-sight robustness and the like, and can be used for solid body positioning in the non-line-of-sight environment in the technical field of communication.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to solid body positioning of wireless signals in a non-line-of-sight environment. Background technique [0002] In recent years, location estimation has been one of the important research topics in mobile communication and wireless sensor networks, with specific applications such as global positioning system, radar, and sonar. With the rapid development of information technology, more and more applications not only require to obtain the position of the target, but also consider its attitude. The influence of the presence of obstacles on the localization of solid objects has been common. Due to the uncertainty of the position and motion state of the obstacle, the refraction, reflection and scattering of the positioning signal are caused, resulting in the multipath effect in the signal transmission process, resulting in the increase of the ranging error, and the det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/06
CPCG01S5/06Y02D30/70
Inventor 万鹏武姚媛媛刘伯阳刘超文王瑾卢光跃黄琼丹魏健陈煜飞
Owner XIAN UNIV OF POSTS & TELECOMM
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