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

Indoor positioning and tracking method based on secondary partition and gradient fingerprint match

A two-level partitioning and indoor positioning technology, applied in positioning, nan, instruments, etc., can solve the problems of low positioning accuracy, complex preprocessing, high maintenance cost, reduce the cost of regular maintenance, ensure high-precision fingerprint positioning, implement simple effect

Active Publication Date: 2017-02-15
NANJING UNIV OF POSTS & TELECOMM
View PDF7 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the low positioning accuracy due to the jitter of the received signal strength value of the fixed reference point caused by factors such as non-line-of-sight, reflection, and multipath interference caused by indoor positioning during the indoor positioning tracking process. The positioning speed is slow due to the large amount, the preprocessing is complicated, the local extreme indoor environment is located, and the post-maintenance cost is high.

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
  • Indoor positioning and tracking method based on secondary partition and gradient fingerprint match
  • Indoor positioning and tracking method based on secondary partition and gradient fingerprint match
  • Indoor positioning and tracking method based on secondary partition and gradient fingerprint match

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and examples. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0042] Indoor positioning and tracking method based on two-level partition and fingerprint gradient matching, the main steps and their development are as follows Figure 4 with Figure 5 shown, including the following steps:

[0043] Step 1: Obtain the underlying feature fingerprint library. This fingerprint library is mainly used to obtain the feature fingerprint of the reference point, including collecting and processing the reference point data, obtaining the first-level partition dictionary, dividing the AP clustering into the second-level partition and extracting the second-level partition center The identification index, the reference point attribute for manual label training, and the cluste...

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 an indoor positioning and tracking method based on secondary partition and gradient fingerprint match. The method mainly comprises the following steps: acquiring an underlying feature fingerprint library, and acquiring a primary partition dictionary; acquiring a gradient fingerprint atlas, acquiring a multilevel partition classifier according to characteristic fingerprint of a training reference point, and predicting a partition to which the test belongs; positioning step: acquiring the belonging partition by using the multilevel partition classifier, and predicting position coordinates of a to-be-tested positioning point; and finally tracking step: tacking and positioning all kinds of motion modes, predicting current position coordinates and a current movement trajectory by using an indoor motion ranging algorithm and the reference position coordinates in the previous step to complete the periodic position joint tracking and positioning of fingerprint positioning. The generated gradient fingerprint atlas can process time varying effects and RSS measurement diversity of heterogeneous equipment, thereby greatly reducing the periodic maintenance cost of the fingerprint atlas, and the gradient fingerprint atlas can not only guarantee high-precision fingerprint positioning, but also can compress a mobile terminal database and improve the performance.

Description

technical field [0001] The invention belongs to the field of indoor positioning, and in particular relates to an indoor positioning and tracking method based on secondary partition and fingerprint gradient matching. Background technique [0002] In recent years, due to the development of the mobile Internet and the increasing demand for location-based services (LBS, Location-Based Service), indoor positioning has attracted much attention in academia and industry. One of the research hotspots in this field. [0003] Indoor positioning technology mainly includes technologies based on Wi-Fi, infrared, radio frequency identification (RFID), ultrasonic, based on ZigBee (IEEE 802.15.4 standard low-power LAN protocol), Bluetooth, indoor microphone array, inertial tracking based on motion sensors, etc. . Among them, Wi-Fi is a wireless local area network based on the IEEE 802.11 standard. It has the characteristics of high bandwidth, high speed, and high coverage, and has incompar...

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): H04W4/04G01S5/02
Inventor 暴建民仇雷
Owner NANJING UNIV OF POSTS & TELECOMM
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