Wavelet detection of singularities in the presence of fractal noise

Steven E. Noel, Yogesh J. Gohel, Harold H. Szu, Harold H. Szu
1997 Wavelet Applications IV  
Here we detect singularities with generalized quadrature processing using the recently developed Hermitian Hat wavelet. Our intended application is radar target detection for the optimal fuzing of ship self-defense munitions. We first develop a wavelet-based fractal noise model to represent sea clutter. We then investigate wavelet shrinkage as a way to reduce and smooth the noise before attempting wavelet detection. Finally, we use the complex phase of the Hennitian Hat wavelet to detect a
more » ... et to detect a simulated target singularity in the presence of our fractal noise. 374 SPIE Vol. 3078 • 0277-786X197/$1O.0O Low-Pass Filter he(t)*S(t) s(t) sin Downloaded From: http://proceedings.spiedigitallibrary.org/ on 12/17/2014 Terms of Use: http://spiedl.org/terms
doi:10.1117/12.271770 fatcat:2aqpv5abgzbk3fhz5wympbmjo4