Enhancing SAR image formation using superimposed FFT

O.M. Abdul-Latif, S.R. Pennock

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

1 Citation (SciVal)


This paper discusses the effect of superimposed-Fast Fourier Transforms on synthetic aperture radar (SAR) image formation. In a Fourier Transform, the band-limited property in measured signals causes relatively high sidelobes, which tends to corrupt the 'target' or 'Image' detected. One technique to reduce side-lobes is windowing; nonetheless, this will also have a broadening effect on the main-lobe. The proposed technique of superimposition attempts to reduce sidelobes while not broadening the target's main-lobe much. Furthermore, the superimposition technique preserves the amplitude of the targets' main-lobe while conventional sharpening techniques tend to distort it in one way or another. Results show minimal resolution loss, significant sidelobe reduction and negligible distortion of peak position and amplitude from the original spectrum.
Original languageEnglish
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
Number of pages4
ISBN (Print)9781467311601
Publication statusPublished - 2012
Event32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012 - Munich, Germany
Duration: 21 Jul 201226 Jul 2012


Conference32nd IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2012


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