An ECG signal is basically an index of the functionality of the heart. For example, a physician can detect arrhythmia by studying abnormalities in the ECG signal. Since very fine features present in an ECG signal may convey important information, it is important to have the signal as clean as possible. Power line interference may be significant in electrocardiography. Often, a proper recording ...

Virtual oscillator control (VOC) is a type of nonlinear grid-forming controller for dc/ac inverters. Compared with the droop method, original VOC has faster transient response in islanded mode. However, its output voltage always contains third-order harmonic, resulting significant third-harmonic current, especially grid-connected In order to eliminate this notch-type filter typically employed, ...

Optimizing the angles for the lattice structures in the prototype filter for perfect-reconstruction cosine-modulated and modified DFT filter banks is a very difficult task because there exist several local optima. In order to get around this problem, this paper describes an efficient systematic technique for designing prototype filters in the least-mean-square sense. First, the few angles for t...

one of the problems in the ground-based circular synthetic aperture radar is the dependence of the azimuth resolution to the antenna rotation radius and operational limitation of increasing it. to enhance the image quality in azimuth, model-based image formation through three methods: matched filter, inverse filter and optimum filter is suggested and analyzed. for the purpose of comparison, thr...