Title :
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
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;
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
DOI :
10.1109/WiSNet.2012.6172145
