Narrowband Interference Suppression in UWB Impulse Radar for Human Being Detection

Narrowband interference (NBI) is a major source of performance degradation in human being detection applications using impulse radar and stroboscopic samplers. Implementation of notch filters results in undesired ringing of the target response. Four methods are developed and their performance analysed: two variations of the approach that extracts the NBI and subtracts its contribution and two variations of the approach that filters the NBI out and restores the missing spectrum. NBI is modelled as modified GSM signal. It is shown that latter methods perform better both in terms of NBI suppression, but also in terms of signal waveform and energy preservation.