This paper describes a software based receiver post processor that corrects circularity and gain errors in coherent receivers. The receiver post processor additionally provides range gating capabilities, signal quality estimation, mixer non-linearity detection and various display functions. This paper will concentrate primarily on the identification of circularity errors by the receiver post pr...

The fetal electrocardiogram (fECG) monitoring yields important information about the fetus condition during pregnancy and it consists in collecting electrical signals by some sensors on the body of the mother. The Independent Component Analysis (ICA) has been widely exploited to isolate the fECG, while wavelet transform has been used as post-processing tool. Here we propose to fit the recently ...

In this paper, a novel technique based on the empirical mode decomposition (EMD) methodology is proposed and examined for the noise-robustness of automatic speech recognition systems. The EMD analysis is a generalization of the Fourier analysis for processing non-linear and non-stationary time functions, in our case, the speech feature sequences. We use the first and second intrinsic mode funct...

We propose a method of reducing the computational complexity of iterative video post-processing algorithms that make use of the convex quantization constraint set. Rather than constraining all DCT coefficients in a block, this method constrains only a subset of a block’s DCT coefficients, and hence eliminates the need to evaluate all coefficients.

s is a time-frequency transform based on the concept of short-time fourier transform and wavelet transform. the main property of this transform that separate it from the discrete short-time fourier transform is variable frequency resolution. but in this transform the change of resolution of high frequencies to low frequencies is very high. so another transform as a modified s transform is intro...

this article gives an approach to predict the springbackward phenomena during post solidification cooling in a functionally graded hybrid composite cylindrical shell with transverse isotropic structure. here the material properties are considered to be given with a general parabolic power-law function. during theoretical analysis, appropriate transform is introduced in the equilibrium equation ...

We extend earlier work on the Orientation Field Transform as an effective method for enhancing curve like features in images. Whereas the original Orientation Field Transform was formulated for straight lines, we generalize the formalism to general curves, resulting in improved accuracy for detecting circular objects. The method only requires one parameter, the curve width, to be selected by th...