Indoors Localization Using Mobile Communications Radio Signal Strength

• Type: Chapter or Part of a Book
• Date: 2011

Authors

Luís Peneda (Author) FEUP; Abílio Azenha (Author) FEUP; Adriano Carvalho (Author) FEUP

Book

Title: Advanced Trends in Wireless Communications

Pages: 265-280

ISBN: 9789533071831

Indexing

INSPEC

Scientific classification

FOS: Engineering and technology > Electrical engineering, Electronic engineering, Information engineering

CORDIS: Technological sciences > Engineering > Control engineering

Other information

Abstract (EN): Radio frequency (RF) indoors localization is adopted by automated guided vehicles (AGVs) positioning due to availability of communications framework sub-system (e.g. ZigBee wireless network). AGV communications sub-system can therefore support RF localization hardware without additional cost. Triangulation or trilateration methods are means of attenuating AGV dead-reckoning navigation errors. Dead-reckoning navigation method makes use of odometry and heading measurement signals. Dead-reckoning presents systematic, non-systematic and numerical drift errors which, in general, increase with traveled distance. Dead-reckoning algorithm performs well in indoors quasi-structured environments for a given period of time or for a given traveled distance, which one is more critical and that depends on current AGV trajectory. So, there is a need of attenuating dead-reckoning errors which, as a result, correspond to localization errors. Indoors localization can then resort to RF triangulation or trilateration techniques. Triangulation technique was subject of some previous authors’ work. In this chapter, state-of-art RF indoors trilateration technique for AGV indoors navigation is presented.

Language: English

Type (Professor's evaluation): Scientific