Signal strength-based positioning method for non-uniform loss factors

A loss factor and signal strength technology, applied in wireless communication, electrical components, network topology, etc., can solve the problems of inconsistent receiver and antenna performance, limited accuracy of RSSI positioning system, etc., achieve wide application range, convenient implementation, and reduce errors Effect

Inactive Publication Date: 2011-04-27
58TH RES INST OF CETC
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) The mobile node to be positioned has the same transmission protocol as the reference node, but only has the function of wireless transmission
[0005] However, in the prior art, the accuracy of the RSSI positioning system is limited due to the inconsistency of the performance of the receivers and antennas of each node, environmental factors and other multiple influences.

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
  • Signal strength-based positioning method for non-uniform loss factors
  • Signal strength-based positioning method for non-uniform loss factors
  • Signal strength-based positioning method for non-uniform loss factors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with drawings and embodiments.

[0021] In the specific system construction process, in order to facilitate the establishment of reference coordinates and the measurement of loss factor, the reference nodes are suggested to be arranged in a rectangular pattern, and then enter the process of measuring the loss factor corresponding to the area to provide calculation parameters for the software database. First, every four adjacent reference nodes determine an area, test the loss factor of the corresponding reference node at the center of each area, and then store the data in the corresponding database, each area corresponds to a 4-set loss factor database, In this way, it is equivalent to taking environmental factors and the inconsistency of node transceiver performance into the loss factor. In the process of positioning, first determine which area the mobile node is in according to the three reference no...

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 provides a signal energy strength-based positioning method. The signals can be radio-frequency signals or underwater acoustic signals. The positioning method comprises the following steps of: measuring reference node path loss factors of corresponding areas, and establishing a database of the loss factors; determining the area of a movable node by using three points with strongest signals; calculating the distances between the movable node to three reference nodes by using the loss factors of the reference nodes of the corresponding areas; and calculating the position of the movable node by using a trilateration survey method. The positioning technology can overcome the defect that the conventional received signal strength indication (RSSI) positioning technology is easily affected by environmental inconsistency and has low precision.

Description

technical field [0001] The invention relates to a mobile target positioning method, in particular to a non-uniform loss factor-based positioning method based on signal strength. Background technique [0002] At this stage, the Internet of Things is a key development field in my country. Positioning technology is a direction for the development of the Internet of Things. It is of great significance for industrial safety monitoring, such as coal mine safety. Of course, its application fields are not limited to this, and it is used in industrial assembly lines. In this way, the efficiency of the pipeline can be improved. [0003] Taking the safety of underground work in coal mines as an example, once an accident occurs, how to quickly and accurately find the location of the personnel is of great help to the rescue work. Using wireless sensor network technology, a number of reference nodes with fixed positions can be pre-arranged in the monitoring environment, and these nodes ca...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04W84/18
Inventor 魏斌虞致国黄召军陈子逢万书芹
Owner 58TH RES INST OF CETC
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