A novel ultrasonic indoor localization system with simultaneous estimation of position and velocity

Author

Scherhäufl, Martin ; Pfeil, Reimar ; Pichler, Markus ; Berger, Achim

Author_Institution

Linz Center of Mechatron. GmbH, Linz, Austria

fYear

2012

Firstpage

21

Lastpage

24

Abstract

We present a novel ultrasonic (US) indoor localization system based on the time-of-arrival (TOA) principle realized with radio frequency (RF) synchronization. The US signal is assembled as a Gold sequence of chirp signals to guarantee a high signal-to-noise ratio (SNR) and, at the same time, provide the position estimates of multiple mobile transmitters (MTs). By exploiting the TOA in the time domain and the Doppler shift in the frequency domain, position and velocity of the MT can be determined simultaneously. The concept is proven by means of both simulated and measured data and performs excellently even in a harsh industrial environment.

Keywords

Doppler shift; indoor radio; mobile radio; radio transmitters; time-frequency analysis; time-of-arrival estimation; ultrasonic devices; Doppler shift; RF synchronization; SNR; TOA principle; US indoor localization system; US signal assembly; chirp signal; frequency domain analysis; gold sequence; harsh industrial environment; multiple MT; multiple mobile transmitter; position estimation; radiofrequency synchronization; signal-to-noise ratio; time domain analysis; time-of-arrival principle; ultrasonic indoor localization system; velocity estimation; Acoustics; Frequency domain analysis; Gold; Mobile communication; Optical transmitters; Position measurement; Receivers; CDMA; TOA; Ultrasonic; indoor localization; position; velocity;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Sensors and Sensor Networks (WiSNet), 2012 IEEE Topical Conference on

Conference_Location

Santa Clara, CA

Print_ISBN

978-1-4577-1237-1

Type

conf

DOI

10.1109/WiSNet.2012.6172145

Filename

6172145