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SAR Image Formation as Wavelet Transform

Fischer, Jens and Molkenthin, Thomas and Chandra, Madhu (2006) SAR Image Formation as Wavelet Transform. VDE Verlag GmbH. European Conference on Synthetic Aperture Radar (EUSAR), 2006-05-16 - 2006-05-18, Dresden, Germany.

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Abstract

In this paper, we derive the SAR raw data model by applying windowing, sampling and convolution to radar reflectivity. We define the SAR transform as the operation reversing the implicitly performed convolution by inverse convolution applied to SAR raw data. The SAR transform is then compared to both, Fourier and Wavelet transform. In either case, defocusing with a certain waveform is involved. We show that SAR and Fourier transform are two opposite special cases of the Wavelet transform in a slightly generalized sense. Due to the fact that the chirp signal which is generating SAR raw data, formally fulfills all requirements for being a wavelet, we conclude furthermore that there might exist faster SAR processing algorithms than those based on the Fourier transform and discuss the idea towards the goal of fast SAR processing, successively focusing in time domain.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:SAR Image Formation as Wavelet Transform
Authors:
AuthorsInstitution or Email of Authors
Fischer, JensUNSPECIFIED
Molkenthin, ThomasUNSPECIFIED
Chandra, MadhuChemnitz University of Technology, Chemnitz, Germany
Date:2006
Refereed publication:No
In ISI Web of Science:No
Page Range:p. 4
Publisher:VDE Verlag GmbH
Series Name:Proceedings
Status:Published
Keywords:SAR, SAR processing, SAR image formation, raw data model, Fourier transform, Wavelet transform, SAR transform
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Dresden, Germany
Event Type:international Conference
Event Dates:2006-05-16 - 2006-05-18
Organizer:VDE
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Flugzeug-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > SAR Technology
Deposited By: Jens Fischer
Deposited On:29 May 2006
Last Modified:12 Dec 2013 20:10

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