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Our objective is to train support vector machines (SVM)-based localized multiple kernel learning (LMKL), using the alternating optimization between the standard SVM solvers with the local combination of base kernels and the sample-specific kernel weights. The advantage of alternating optimization developed from the state-of-the-art MKL is the SVM-tied(More)
Localizing a source of radial movement at moderate range using a single hydrophone can be achieved in the reliable acoustic path by tracking the time delays between the direct and surface-reflected arrivals (D-SR time delays). The problem is defined as a joint estimation of the depth, initial range, and speed of the source, which are the state parameters(More)
Passive localization of a sound source in the deep ocean is investigated in this study. The source can be localized by taking advantage of a cross-correlation function matching technique. When a two-sensor vertical array is used in the deep ocean, two types of side lobe curves appear in the ambiguity surface of the localization. The side lobe curves are(More)
There are numerous studies showing that there is a constant increase in the ocean ambient noise level and the ever-growing demand for developing algorithms for detecting weak signals in ambient noise. In this study, we utilize dynamical and statistical complexity to detect the presence of weak ship noise embedded in ambient noise. The ambient noise and ship(More)
Our objective is to train SVM based Localized Multiple Kernel Learning with arbitrary <formula formulatype="inline"><tex Notation="TeX">$l_{p}$</tex> </formula>-norm constraint using the alternating optimization between the standard SVM solvers with the localized combination of base kernels and associated sample-specific kernel weights. Unfortunately, the(More)
For bistatic sonar, the weak signal of target is often buried by the side lobes of strong direct blast after pulse compression. A method is proposed in this paper to suppress the side lobes of matched filter output. The basic idea is to design an FIR filter at the output of matched filter, so that to minimize the ISL (Integrated Side lobe Level), while(More)
The arrival signals of the vertical line array (VLA) in the waveguide are not plane waves. The direction of maximum array output will not be the exact direction of the source. The acoustic pressure field can be expressed in terms of a normal mode expansion. The output of the VLA for a distance source in the waveguide is then constructed by summing up(More)