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Assessment of Processing Methods for Stepped Frequency Airborne SAR

Barbosa, Felipe and Scheiber, Rolf (2006) Assessment of Processing Methods for Stepped Frequency Airborne SAR. Diploma. DLR-Interner Bericht. DLR-HR-IB-551-1/2006, 91 S.

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Abstract

Recently, the E-SAR system of DLR has been upgraded to stepped-frequency mode in X-band to improve the range resolution of SAR images. Initially the resolution was limited by the maximum chirp bandwidth/sampling frequency of 100MHz. The stepped frequency operation mode of the ESAR system uses two different frequency steps and leads to an improvement of up to 80% in the range resolution. The hardware-upgrade was limited to RF-front end modifications, thus keeping data acquisition hardware and system control software more or less unchanged. However, for the case of the E-SAR system, the processing of stepped frequency data is new. The demand was for additional software modules for processing stepped-frequency waveforms. The outcome of this thesis is a prototype processor to be used by DLR to process stepped-frequency data acquired by its SAR systems.

Document Type:Monograph (DLR-Interner Bericht, Diploma)
Title:Assessment of Processing Methods for Stepped Frequency Airborne SAR
Authors:
AuthorsInstitution or Email of Authors
Barbosa, FelipeUNSPECIFIED
Scheiber, RolfUNSPECIFIED
Date:2006
Refereed publication:No
Number of Pages:91
Status:Published
Keywords:synthetic aperture radar, high resolution, step frequency
Institution:ITA, Sao Jose dos Campos, Brasilien
Department:Elektrotechnik
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
Microwaves and Radar Institute > SAR Technology
Deposited By: Dr.-Ing. Rolf Scheiber
Deposited On:21 Nov 2006
Last Modified:12 Dec 2013 20:21

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