Positioning method in mixed sight distance and non-sight-distance environment based on received signal strength

A technology of received signal strength and positioning method, which can be used in positioning, wireless communication, measuring devices, etc., and can solve problems such as non-line-of-sight errors

Active Publication Date: 2020-02-28
NINGBO UNIV
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a positioning method based on received signal strength in a mixed line-of-sight

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Positioning method in mixed sight distance and non-sight-distance environment based on received signal strength
  • Positioning method in mixed sight distance and non-sight-distance environment based on received signal strength
  • Positioning method in mixed sight distance and non-sight-distance environment based on received signal strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] A positioning method based on received signal strength in a mixed line-of-sight and non-line-of-sight environment proposed by the present invention, its overall flow chart is as follows figure 1 As shown, it includes the following steps:

[0033] Step 1: Establish a plane coordinate system or a space coordinate system as a reference coordinate system in the wireless sensor network; set a target source for transmitting measurement signals and N receiving sensors for receiving measurement signals in the wireless sensor network; Record the real values ​​of the coordinate positions of the N receiving sensors in the reference coordinate system as s 1 ,...,s N , record the coordinate position of the target source in the reference coordinate system as x; wherein, N≥3, in this embodiment N=8, s 1 Indicates the real value of the coordinate po...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a positioning method in a mixed sight distance and non-sight-distance environment based on received signal strength. The positioning method comprises the following steps: constructing a model for the signal intensity of a measurement signal received by a receiving sensor; converting the model by introducing balance parameters of extra loss caused by non-line-of-sight errorsso as to obtain a corresponding first-order Taylor expansion expression and a corresponding first-order Taylor simplification expression; constructing a robust weighted least square problem accordingto the first-order Taylor simplified expression; utilizing an approximate relation, an upper mirror image method and an S-Lemma theorem, introducing an error upper bound of extra loss, and convertingthe error upper bound into a robust weighted least square simplification problem; converting a robust weighted least square simplification problem into a positive semidefinite programming problem byusing a convex relaxation method; and solving the positive semidefinite programming problem to obtain an estimated value of the coordinate position of the target source. The method has the advantagesthat the problem that non-line-of-sight errors exist in the measurement environment can be solved, and therefore, the positioning precision can be improved.

Description

technical field [0001] The invention relates to a target positioning method, in particular to a positioning method based on received signal strength in a mixed line-of-sight and non-line-of-sight environment. Background technique [0002] In recent years, wireless sensor network (WSN) has developed rapidly due to its wide range of applications, which can conveniently and quickly realize positioning and navigation, environmental monitoring, smart home, industrial control, etc. With the development of technology and the progress of society, high-precision target positioning technology has shown a wide range of application prospects in various fields. Therefore, it is very necessary to research on high-precision target localization methods in wireless sensor networks. [0003] At present, there are many basic methods to realize target positioning, and the most widely used method is the time measurement method based on time of arrival (TOA). However, wireless sensor networks u...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S5/02G01S11/06H04W84/18
CPCG01S5/02G01S11/06H04W84/18
Inventor 王刚孙英豪
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap