Title :
Cross-Correlation and Sine-Fitting Techniques for High Resolution Ultrasonic Ranging
Author :
Queirós, R. ; Girao, Pedro ; Serra, A. Cruz
Author_Institution :
Inst. Superior Tecnico, Tech. Univ. of Lisbon
Abstract :
This paper presents a combination of two techniques for high resolution ultrasonic distance measurements in air. The first is the cross-correlation between transmitted and received signals to determine the time-of-flight (TOF), and the second is the sine-fitting to determine the phase-shift between these signals. Sine-fitting can estimate the phase-shift with very high accuracies. The result of this synergy is very accurate distance measurements
Keywords :
correlation methods; distance measurement; signal processing; ultrasonic measurement; cross-correlation techniques; high resolution ultrasonic ranging; phase-shift estimation; sine-fitting techniques; time-of-flight; ultrasonic distance measurements; Bandwidth; Distance measurement; Instrumentation and measurement; Phase estimation; Sampling methods; Telecommunications; Temperature dependence; Transmitters; Ultrasonic variables measurement; Wavelength measurement; Ultrasonic distance measurements; cross-correlation; sine-fitting; time-of-flight and phase-shift estimation;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE
Conference_Location :
Sorrento
Print_ISBN :
0-7803-9359-7
Electronic_ISBN :
1091-5281
DOI :
10.1109/IMTC.2006.328588
