Local Interpolation-based Polar Format SAR: Algorithm, Hardware Implementation and Design Automation

Qiuling Zhu, Christian R. Berger, Eric L. Turner, Larry Pileggi, Franz Franchetti
2012 Journal of Signal Processing Systems  
In this paper we present a local interpolationbased variant of the well-known polar format algorithm used for synthetic aperture radar (SAR) image formation. We develop the algorithm to match the capabilities of the application-specific logic-in-memory processing paradigm, which off-loads lightweight computation directly into the SRAM and DRAM. Our proposed algorithm performs filtering, an image perspective transformation, and a local 2D interpolation, and supports partial and low-resolution
more » ... onstruction. We implement our customized SAR grid interpolation logic-in-memory hardware in advanced 14 nm silicon technology. Our high-level design tools allow to instantiate various optimized design choices to fit image processing and hardware needs of application designers. Our simulation results show that the logic-in-memory approach has the potential to enable substantial improvements in energy efficiency without sacrificing image quality.
doi:10.1007/s11265-012-0720-4 fatcat:j6uhp5rifnhjdbwbnyvwjfjpwy