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

Systems and methods for hybrid positioning using wi-fi blended with gnss

A technology of hybrid positioning and satellite positioning system, which is applied in the field of hybrid positioning and can solve the problem of not representing independent information.

Active Publication Date: 2019-09-17
TEXAS INSTR INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Errors in GPS or Wi-Fi locks (not reflected in the uncertainty measure) will result in bias in blended locks
[0016] Also, Wi-Fi and GPS fixes are usually colored by the past and do not represent independent information, so using a weighted sum is certainly not optimal in these cases

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
  • Systems and methods for hybrid positioning using wi-fi blended with gnss
  • Systems and methods for hybrid positioning using wi-fi blended with gnss
  • Systems and methods for hybrid positioning using wi-fi blended with gnss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Aspects of the invention provide an algorithm for blending Wi-Fi fixes with GNSS fixes to provide overall good positioning accuracy. The main elements of the Wi-Fi and GNSS hybrid solution are discussed in conjunction with different embodiments of the present invention.

[0030] In one embodiment of the invention, the blended position is fed back to the GNSS Kalman filter and the blended position replaces the position state in the Kalman filter.

[0031] In one embodiment of the invention, intelligent blending is performed by blending Wi-Fi fixes with GNSS fixes only when GNSS needs assistance.

[0032] In one embodiment of the invention, constrained blending is performed by modifying the strength of blending based on Wi-Fi and GNSS fixes.

[0033] Wi-Fi positioning can be server-based or STA-based, where a STA is a station operable to use the Wi-Fi protocol. In server-based positioning, each STA sends a list of BSSIDs and RSSs to a server, such as Google or Navizon, ...

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 present invention relates to a system and method for hybrid positioning using a blend of Wi-Fi and GNSS. The device (300) includes a Wi-Fi network location processing engine (302), a GPS location processing engine (306), and a hybrid processing engine (304). The Wi-Fi network location processing engine (302) can generate a Wi-Fi location signal based on a Wi-Fi location signal from a Wi-Fi network product. The GPS location processing engine (306) can generate GPS location signals based on GPS location signals from a GPS. The hybrid processing engine (304) may determine whether to generate a third location signal based on the Wi-Fi location signal, to generate the third location signal based on the GPS location signal, or to generate the third location signal based on the Wi-Fi location signal and the A GPS location signal generates the third location signal, and may be based on a combination of the Wi-Fi location signal, the GPS location signal, and a combination of the Wi-Fi location signal and the GPS location signal. One generates the third position signal.

Description

technical field [0001] The present invention relates to positioning technology and, in particular, to hybrid positioning by blending multiple positioning technologies. Background technique [0002] Location-based services are an emerging field of mobile applications that take advantage of the ability of new devices to calculate their current geographic location and report that geographic location to a user or service. Some examples of these services include identifying a person or object's location in the context of entertainment, work, health, or personal life. [0003] Location-based services require instantaneous and reliable positioning systems that work no matter where they are. Since no single positioning technique can meet this need, combining different positioning techniques to compensate for the limitations of the individual techniques themselves may provide better results. Such combinations typically include the combination of Global Navigation Satellite System (...

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 Patents(China)
IPC IPC(8): H04W4/02G01S19/46G01S19/48
CPCG01S19/48
Inventor 斯坦纽纳坦·罗摩克里希南德里克·韦恩·沃特斯贾伊加内什·巴拉克利什南
Owner TEXAS INSTR INC
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