Chapter 4
Acoustical Imaging Applications
Chapter 3 provided the foundation of the linear shift-invariant model of wave propagation. The model is now fully established with the impulse response, transfer function, and resolution analysis. This allows Fourier analysis to take the center role of system modeling and image reconstruction.
The analysis in Chapter 3 was based on the concept of coherent wave propagation, which is the building block of the linear model. The objective of this chapter is to extend from the coherent model to the wideband format, in order to formulate the resolution analysis in the range direction for practical applications. For the use of wideband waveforms as the probing signals, this chapter starts with the pulse–echo ...
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