A Barrage Jamming Suppression Method for Multiple Jammers Based on Elevation Multi-Channel SAR

Synthetic Aperture Radar (SAR) demonstrates advantages in continuous, all-weather, high-resolution Earth observation. However, barrage jamming in both the time and frequency domains can overwhelm SAR signals, leading to a significant overlap between interference and target signals, thus making separation challenging. In particular, barrage interference from multiple jammers can render SAR images almost indecipherable, substantially diminishing the quality of SAR image products. This paper introduces a barrage jamming suppression method for multiple jammers utilizing elevation multi-channel SAR. By first performing blind source separation on the mixed echoes, signals from different imaging bands are extracted, followed by imaging and other processes. Simulation experiments have confirmed that this approach offers benefits such as low system complexity and effective jamming suppression.