Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Minimum error propagation based trilateration positioning method for anchor node optimal selection

A technology for optimal selection and error propagation. It is used in positioning, measurement devices, radio wave measurement systems, etc., and can solve problems such as low positioning accuracy and communication distance estimation errors.

Inactive Publication Date: 2017-12-26
HARBIN INST OF TECH AT WEIHAI
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to effectively solve the problem of low positioning accuracy caused by communication distance estimation errors, and provide a trilateration positioning method based on optimal selection of anchor nodes based on minimum error propagation

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
  • Minimum error propagation based trilateration positioning method for anchor node optimal selection
  • Minimum error propagation based trilateration positioning method for anchor node optimal selection
  • Minimum error propagation based trilateration positioning method for anchor node optimal selection

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0027] Specific implementation mode one: combine figure 1 To illustrate this embodiment, a trilateration positioning method based on minimum error propagation-based optimal selection of anchor nodes described in this embodiment includes the following steps:

[0028] Step 1. There are I+1 wireless sensor nodes in the system, which are respectively I positioned anchor nodes and 1 unknown node. They all have nanoLOC wireless radio frequency transceivers, and any two nodes can be measured by bilateral peer-to-peer method The estimated distance between, wherein, I is a positive integer set by the user, and 4≤I≤10, and I takes a value of 10 among the present invention;

[0029] Step 2. Each node in the system is initialized. The unknown node first establishes a wireless network and waits for other nodes to apply to join the network;

[0030] Step 3, after 1 anchor node is initialized successfully, use the radio frequency transceiver to scan and discover the wireless network establi...

specific Embodiment approach 2

[0049] Specific embodiment 2. This embodiment is a further description of the trilateration positioning method based on the optimal selection of anchor nodes based on minimum error propagation described in specific embodiment 1. In this embodiment, dynamic sliding windows and single-pass The scanning method can efficiently select the three with the smallest product value of the statistical standard deviation and the distance estimation value in the distance estimation standard deviation sequence, providing support for the optimal selection of the anchor node.

specific Embodiment approach 3

[0050] Specific embodiment 3. This embodiment is a further description of the trilateration positioning method based on the optimal selection of anchor nodes based on minimum error propagation described in specific embodiment 1. In this embodiment, the communication based on minimum error propagation is adopted. The optimal selection of distance estimation and anchor nodes reduces the impact of distance estimation errors on trilateration positioning and achieves high-precision trilateration positioning.

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 minimum error propagation based trilateration positioning method for anchor node optimal selection and relates to an improved trilateration positioning method for anchor node optical selection, for the purpose of effectively solving the problem of quite low positioning precision caused by communication distance estimation errors. According to the minimum error propagation based trilateration positioning method for anchor node optimal selection, first of all, multiple sample values of distance estimation between an unknown node and each anchor node are obtained by use of a bilateral equivalent distance estimation method, and a statistical mean and a statistical standard deviation of each distance estimation value are obtained through statistics analysis; then three distance estimation results of minimum products of the distance estimation statistical means and the statistical standard deviations are obtained by use of a dynamic sliding window and a single scanning method, and a trilateration positioning equation set is constructed by selecting three corresponding anchor nodes; and finally, a high-precision positioning result is obtained by use of a least squares criterion.

Description

technical field [0001] The invention relates to high-precision distance estimation and positioning technology. Background technique [0002] In the actual wireless communication environment, due to the influence of adverse factors such as noise, environment and measurement errors, the distance estimation has a large error, resulting in a large error in the positioning result of the trilateration. In view of the above problems, the present invention evaluates the product of the statistical mean value and the statistical standard deviation of the communication distance estimation results between each anchor node and the unknown node under the anchor node redundant positioning environment, and optimizes the selection of the positioning equation group during the construction process. The required distance values ​​and anchor nodes reduce the impact of distance estimation errors on positioning results, thereby improving the positioning accuracy of trilateration. Contents of the...

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): H04W64/00G01S5/02G01S5/06G01S5/14
CPCH04W64/00G01S5/0278G01S5/06G01S5/14
Inventor 焉晓贞罗清华沈豪周鹏太
Owner HARBIN INST OF TECH AT WEIHAI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com