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In this paper, we present a nonlinear suboptimal detector whose performance in the leptokurtic noise is significantly better than that of matched filter. This detector contains a denoising pre-processor based on a non-linear wavelet transform called median interpolating pyramid transform (MIPT) proposed by Donoho and Yu [1]. The output of the pre-processor is passed through a matched filter and a...
In this paper, we propose the use of the phenomenon of suprathreshold stochastic resonance (SSR) in the detection of a transient signal in a noisy environment. An SSR pre-processor consisting of an array of 2-level quantizers is used to boost the SNR of the data before being transformed by a translation invariant wavelet packet transform (TIWPT). The maximum magnitude coefficient of the TIWPT output...
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