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Shared memory based real-time implementation of UWB-OFDM SAR imaging system

MD ANOWAR HOSSAIN1,* , IBRAHIM ELSHAFIEY1, MAJEED A. S. ALKANHAL1

Affiliation

  1. Department of Electrical Engineering, King Saud University, Riyadh, Kingdom of Saudi Arabia

Abstract

A novel technique for FPGA implementation of potentially jamming-resistant and high-resolution synthetic aperture radar (SAR) system using UWB-OFDM architecture has been presented. The greater computation time and larger memory requirement is still the main difficulties in processing huge SAR raw data in real-time UWB SAR imaging. Significant part of the computation time is related to compression of raw data in range and cross-range domain which in turns heavily depends on computing FFT, IFFT and complex multiplication as part of SAR imaging. A shared memory based FPGA model is developed using Xilinx block-set which is able to perform range and azimuth compression with high accuracy. The design procedures are straightforward and can be applied to any practical SAR system for real-time imaging. The model is designed as hardware co-simulation using Xilinx system generator and implemented on Xilinx Virtex-6 ML605 FPGA..

Keywords

Field Programmable Gate Araay (FPGA), Ultra-wideband (UWB), Orthogonal frequency division multiplexing (OFDM), Synthetic Aperture Radar (SAR).

Citation

MD ANOWAR HOSSAIN, IBRAHIM ELSHAFIEY, MAJEED A. S. ALKANHAL, Shared memory based real-time implementation of UWB-OFDM SAR imaging system, Optoelectronics and Advanced Materials - Rapid Communications, 8, 7-8, July-August 2014, pp.635-642 (2014).

Submitted at: May 19, 2014

Accepted at: July 10, 2014