Journal of Signal Processing Systems

, Volume 71, Issue 3, pp 297–312

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

  • Qiuling Zhu
  • Christian R. Berger
  • Eric L. Turner
  • Larry Pileggi
  • Franz Franchetti
Article

DOI: 10.1007/s11265-012-0720-4

Cite this article as:
Zhu, Q., Berger, C.R., Turner, E.L. et al. J Sign Process Syst (2013) 71: 297. doi:10.1007/s11265-012-0720-4

Abstract

In this paper we present a local interpolation-based 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 reconstruction. 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.

Keywords

Synthetic aperture radarLogic in memoryChip generator

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Qiuling Zhu
    • 1
  • Christian R. Berger
    • 1
  • Eric L. Turner
    • 1
  • Larry Pileggi
    • 1
  • Franz Franchetti
    • 1
  1. 1.Department of Electrical and Computer EngineeringCarnegie Mellon UniversityPittsburghUSA
  2. 2.Wireless System R&DMarvell SemiconductorSanta ClaraUSA
  3. 3.Department of Electrical Engineering and Computer ScienceUniversity of California BerkeleyBerkeleyUSA