Browsing by Subject "Time-frequency image"
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Item Open Access Deep learning in electronic warfare systems: Automatic intra-pulse modulation recognition(Institute of Electrical and Electronics Engineers, 2018) Akyön, Fatih Çağatay; Alp, Y. K.; Gök, G.; Arıkan, OrhanDetection and classification of radars in electronic warfare systems is a major problem. In this work, we propose a novel deep learning based method that automatically recognizes intra-pulse modulation types of radar signals. We use reassigned short-time Fourier transforms of measured signals and detected outliers of the phase differences using robust least squares to train a hybrid structured convolutional neural network to distinguish frequency and phase modulated signals. Simulation results show that the developed method highly outperforms the current state-of-the-art methods in the literature.