Robust High Accuracy Ultrasonic Range Measurement System
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|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||Online since:||2012-12-18T16:49:11Z||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||Journal:||IEEE Transactions On Instrumentation And Measurement||Volume:||60||Issue:||10||Start page:||3334||End page:||3341||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|DOI:||10.1109/TIM.2011.2128950||Language:||en||Status of Item:||Not peer reviewed|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|
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