FAST GPU-BASED INTERPOLATION FOR SAR BACKPROJECTION

Fast Gpu-based Interpolation for Sar Back- Projection

We introduce and discuss a parallel SAR backprojection algorithm using a Non-Uniform FFT (NUFFT) routine implemented on a GPU in CUDA language. The details of a convenient GPU implementation of the NUFFT-based SAR backprojection algorithm, amenable to further generalizations to a multi-GPU architecture, are also given. The performance of the approach is analyzed in terms of accuracy and computa...

Backprojection SAR interferometry

Synthetic aperture radar (SAR) interferometry uses the phase difference between two SAR antennas to obtain an elevation estimate of the imaged terrain. Using an initial digital elevation model (DEM), the time-domain backprojection algorithm implicitly removes the terrain height phase from images during image formation. The use of a DEM during image formation adds additional information to the p...

Backprojection Analysis of MIMO SAR

Multiple-input multiple-output (MIMO) techniques have brought significant advances to wireless communications. In recent years, researchers have sought to bring similar advances to radar using MIMO. One specific area that has received relatively little attention is MIMO synthetic aperture radar (SAR). The advantages that MIMO might provide to SAR are not well represented in literature. This pap...

Backprojection algorithms for multicore and GPU architectures

Combined algorithmic and GPU acceleration for ultra-fast circular conebeam backprojection

In this paper, we describe the first implementation and performance of a fast O(NlogN) hierarchical backprojection algorithm for cone beam CT with a circular trajectory,developed on a modern Graphics Processing Unit (GPU). The resulting tomographic backprojection system for 3D cone beam geometry combines speedup through algorithmic improvements provided by the hierarchical backprojection algori...