Fourier Transform of SAR Data Cube and 3-D Range Migration Algorithm

To develop a 3-D imaging synthetic aperture radar(SAR) algorithm, theoretical expression for Fourier transform of data cube is required. In this article, we introduce function representing the SAR cube. The derived using method stationary phase and similar to one used 2-D matrix. For verification evaluation, range migration algorithm bulk compression examined. simulation results based on parameters an experimental terahertz indoor testbed show that can well focus image and, hence, verify function. quality assessments such as spatial resolutions peak sidelobe ratio are further evaluate algorithm. measured compared with ones provided by backprojection