A Barrage Jamming Suppression Method for High-Resolution Wide-Swath SAR Systems on Correlation Filtering

The azimuth multichannel synthetic aperture radar (SAR) increases swath width by reducing the pulse repetition frequency (PRF), thus enabling the simultaneous achievement of high-resolution and wide-swath (HRWS) imaging. However, the quality of multichannel SAR images will suffer from electromagnetic jamming in the electronic antagonism environment, resulting in the loss of scene information. In this paper, we present a novel interference suppression method rooted in correlation filtering. First, multi -channel data undergoes multi -beam formation, and then one of the beam echoes is used as the interference matching signal; the other beam echo is correlation filtered to obtain the suppressed beam echo. Finally, inverse processing is applied to the multi-beam data, yielding interference-suppressed multi -channel data. Simulation confirms that this method effectively mitigates interference and obtains the HRWS SAR images.