Abstract:

To solve the problem of narrow band interference (NBI) from other electronic systems for foliage penetration ultra wide band synthetic aperture radar (FOPEN UWB SAR), a new kind of phasemodulated waveform design method which minimizes the power spectrum in the interference bands and the correspondence frequency domain processing method are proposed. Penalization function is first constructed. The conjugate gradient algorithm in phase domain is proposed to realize optimized calculation. Last the frequency domain matched filter and unmatched filter for suppressing range sidelobe are studied. Simulation results show that this method can effectively suppress narrow band interference (NBI) and be realized in engineering.