Multistatic Fourier-based technique for radar systems

Fast and accurate radar imaging techniques are mostly based on Fourier-based processing. While for monostatic setup these methodologies are widely used, multistatic systems make Fourier-based imaging more challenging: i) k-space is not uniform, requiring multidimensional interpolation methods, and ii) image is distorted when the incident spherical wave is approximated by a plane wave. This work overcomes these limitations proposing fully parallelizable solutions: i) an improved fast interpolation algorithm, and ii) spherical wave is approximated by multiple plane waves. Benchmarking with standard SAR imaging algorithm has been performed through 3D simulation-based examples and radar measurements.