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Let me briefly highlight the key signal waveforms from our experiments. First, we observed the original radar emitter signals, which were highly aliased due to the complex electromagnetic environment. After applying blind source separation, we obtained clean, isolated signals corresponding to individual radar emitters. Next, we extracted the signal envelopes using the Hilbert transform and applied our floating threshold method to shape the envelopes into rectangular pulse trains. These pulse trains exhibited sharp rising and falling edges, which are crucial for accurately determining pulse arrival and end times. Finally, we used these pulse trains to calculate the PRI values, which closely matched the true values.
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IEEE/ICACT20250229 Slide.15
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