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Our proposed method addresses the critical challenge of signal aliasing in complex electromagnetic environments. By employing blind source separation (BSS), we effectively isolate single radar signals from aliased signals received by a one-dimensional uniform antenna array. This separation allows us to accurately estimate the Pulse Repetition Interval (PRI). Additionally, our innovative waveform shaping method, based on the floating threshold of the Hilbert envelope, generates a rectangular pulse train that enables precise extraction of pulse arrival and end times. This approach significantly improves the accuracy of PRI estimation, even in environments with high pulse density and complex PRI modulations.
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IEEE/ICACT20250229 Slide.17
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