New GPS anti‐jamming system based on multiple short‐time Fourier transform
Mohammad Rezaei, Mohsen Abedi, Mohammad Reza Mosavi · IET Radar Sonar & Navigation · 2016
In this study, an enhanced short‐time Fourier transform (STFT)‐based jamming mitigation system which employs several windows to increase time–frequency ( t–f ) plane resolution is proposed. A technique for employing near‐optimum windows is also proposed. It is observed that selection of these windows leads to increasing the resolution of the t–f representation. An infinite impulse‐response notch filter is employed for jamming removal process. Performance of the proposed method is evaluated by a set of measured global positioning system data. It is compared with conventional STFT‐based algorithms reported in literature.