Generalized target description and wavelet decomposition [sonar]

Generalized target description by means of colored bright spots is very attractive for recognition or classification tasks in active sonar applications. In the present work, it is shown how such a description can be achieved directly from the impulse response. It turns out that the resulting procedure is closely connected with the technique of wavelet decomposition. It is shown that these two techniques share important common features concerning both the structure of their privileged analysis tools (transmitted signal or analyzing wavelet) and the way in which they obtain relevant information on a system under investigation