GMTI with Multi-channel SAR Based on the MUSIC Technique

This paper proposes an algorithm for ground moving target indication (GMTI) with multi-channel synthetic aperture radar (SAR) based on the multiple signal classification (MUSIC) technique. First, the images of different channels are registered in position and equalized in phase. Then, the MUSIC technique is used to estimate the spatial frequency and the intensity of the strongest scatterer at each pixel, and the spatial frequencies and the intensities are used to generate the feature image. Finally, a constant false alarm rate (CFAR) method is used to extract moving targets from the feature image. The results of simulated data and field data demonstrate the excellent performance of this algorithm, especially for the scenes with high clutter and high noise.