ARRAY SIGNAL PROCESSING
The course, after a few elements of underwater acoustics, describes the theory and techniques for the processing of signals produced or received by arrays of transducers. Special emphasis is given to image generation. An overview of some important applications is provided, including sonar systems, medical ultrasound, and microphone arrays
Introduction to the array signal processing. Aims, methods, and applications.
Acoustic signals. Basics of underwater acoustics and active sonar systems. Need for space-time processing.
Data-independent array signal processing. Beamforming as a spatial filter. Linear and planar arrays. Beam pattern. Array gain and directivity index. Imaging-oriented digital beamforming: techniques and systems. Near-field and wide-band aspects. Beamforming implementations: time-domain and frequency-domain. 3-D imaging. Computational burden estimation. Superdirective beamforming and synthesis of a filter-and-sum beamformer.
Acoustic imaging systems deploying arrays.
Elements of data-dependent array signal processing.
- H.L. Van Trees, Optimum Array Processing. Part IV of Detection, Estimation, and Modulation Theory, John Wiley and Sons, New York, 2002
- J. Johnson, D. Dudgeon, Array Signal Processing - Concepts and Techniques, Prentice Hall, 1993
- R.O. Nielsen, Sonar Signal Processing, Artech House, 1991
- V. Murino, A. Trucco, "Three-Dimensional Image Generation and Processing in Underwater Acoustic Vision, " The Proceedings of the IEEE, vol. 88, pp. 1903-1946, December 2000.
- X. Lurton, An Introduction to Underwater Acoustics, Principles and Applications, Springer-Praxis, 2002.
Ricevimento: By appointment
ANDREA TRUCCO (President)
Approximately 20 September