From chirps to random-FM excitations in pulse compression ultrasound systems

Sergio Callegari, Marco Ricci, Salvatore Caporale, Marcello Monticelli, Massimiliano Eroli, Luca Senni, Riccardo Rovatti, Gianluca Setti, Pietro Burrascano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


Pulse compression is often practiced in ultrasound Non Destructive Testing (PDF) systems using chirps. However, chirps are inadequate for setups where multiple probes need to operate concurrently in Multiple Input Multiple Output (PDF) arrangements. Conversely, many coded excitation systems designed for PDF miss some chirp advantages (constant envelope excitation, easiness of bandwidth control, etc.) and may not be easily implemented on hardware originally conceived for chirp excitations. Here, we propose a system based on random-FM excitations, capable of enabling PDF with minimal changes with respect to a chirp-based setup. Following recent results, we show that random-FM excitations retain many advantages of chirps and provide the ability to frequency-shape the excitations matching the transducers features. © 2012 IEEE.
Original languageEnglish (US)
Title of host publicationIEEE International Ultrasonics Symposium, IUS
Number of pages4
StatePublished - Dec 1 2012
Externally publishedYes


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