Spectrogram segmentation-based tracking of a frequency-hopped signalhttp://www.library.tuc.gr/artemis/DT2008-0232/DT2008-0232.pdfhttp://purl.tuc.gr/dl/dias/F660EE1D-1B90-4B35-8484-DF4B98A107D2Spectrogram segmentation-based tracking of a frequency-hopped signalfree2014-03-24application/pdf