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|Title:||Ultrasonic signal compressive detection with sub-Nyquist sampling rate|
|Keywords:||Analog-to-information Converter (AIC);Compressive Sampling;Joint Signal Reconstruction;Sub-Nyquist Sampling;Ultrasonic Signal|
|Abstract:||This study presents a compressed sensing (CS) based sampling approach for repetitive ultrasonic signal. Proposed system considers recovering ultrasonic signal with high equivalent sampling frequency from samples captured using analog-to-digital converter (ADC) clocked at a rate lower than Nyquist rate. A basis function is constructed to realize ultrasonic signal sparse representation, which paves the way for applying CS theory to ultrasonic signal sub-Nyquist sampling. A sampling architecture, applicable for ultrasonic compressive detection, is developed. With this sampling system, an ultrasonic signal sampled at ultralow rate, but still can be recovered with overwhelming probability.|
|ISSN:||0975-1084 (Online); 0022-4456 (Print)|
|Appears in Collections:||JSIR Vol.71(03) [March 2012]|
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