Robust High Accuracy Ultrasonic Range Measurement System
Files in This Item:
|saad_bleakley_dobson_2011.pdf||9.54 MB||Adobe PDF||Download|
|Title:||Robust High Accuracy Ultrasonic Range Measurement System||Authors:||Saad, Mohamed M.
Bleakley, Chris J.
|Permanent link:||http://hdl.handle.net/10197/3967||Date:||Oct-2011||Abstract:||This paper presents a novel method for ultrasonic range estimation. The method uses a wideband frequency-hop spread spectrum ultrasonic signal to increase robustness to noise and reverberation. The method applies cross-correlation with earliest peak search and a novel minimum variance search technique to correct the error in the cross-correlation time-of-flight estimate to within one wavelength of the carrier before applying a phase-shift technique for subwavelength range refinement. The method can be implemented digitally in software and only requires low-cost hardware for signal transmission and acquisition. Experimental results show an accuracy of better than 0.5 mm in a typical office environment.||Type of material:||Journal Article||Publisher:||IEEE||Copyright (published version):||2011 IEEE||Keywords:||Cross-correlation;Frequency-hop spread spectrum (FHSS);Phase shift;Range estimation;Ultrasonic||Subject LCSH:||Signal processing
Frequencies of oscillating systems--Measurement
|DOI:||10.1109/TIM.2011.2128950||Language:||en||Status of Item:||Not peer reviewed|
|Appears in Collections:||Computer Science Research Collection|
Show full item record
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.