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Frequency Scanning Transmit/Receive Antenna Beam Imaging Mode

Younis, Marwan and Queiroz de Almeida, Felipe and Villano, Michelangelo and Bollian, Tobias and Krieger, Gerhard and Moreira, Alberto (2022) Frequency Scanning Transmit/Receive Antenna Beam Imaging Mode. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2022-07-25 - 2022-07-27, Leipzig, Germany. ISSN 2197-4403.

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Official URL: https://www.eusar.de/de


The SAR imaging mode described in this paper utilizes the available bandwidth to form a narrow frequency-scanning transmit antenna beam illuminating the swath of interest from far to near range. Similarly the frequency-scanning receive antenna beam collects the return echo signal reflected from the ground. The operation parameters of the frequency SCan On Receive and Transmit (fSCORT) technique may be chosen to significantly reduce the duration of the received radar echo without sacrificing swath width. The frequency scanning SAR technique/mode described in this paper is known from \cite{Roemer18, FScan_PatentUS, Nan2020} The paper provides a simple model describing the imaging mode. It is shown that the technique trades range resolution for signal-to-noise ratio, azimuth resolution, and swath width. Further, it is shown that the (transmit) pulse duty cycle may be significantly increased over what is common for pulsed SAR systems allowing for a lower peak-to-average transmit power ratio. The imaging mode is especially suitable for spaceborne SAR systems operating at high frequencies, where other advanced digital beam-forming techniques may not be feasible due to technology limitations. The performance metric of the technique is derived, and a comparison to classical stripmap operation mode shows an improvement of several decibels.

Item URL in elib:https://elib.dlr.de/186456/
Document Type:Conference or Workshop Item (Speech)
Title:Frequency Scanning Transmit/Receive Antenna Beam Imaging Mode
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Younis, MarwanUNSPECIFIEDhttps://orcid.org/0000-0002-8563-7371UNSPECIFIED
Queiroz de Almeida, FelipeUNSPECIFIEDhttps://orcid.org/0000-0001-5929-6633UNSPECIFIED
Villano, MichelangeloUNSPECIFIEDhttps://orcid.org/0000-0002-1769-6927UNSPECIFIED
Bollian, TobiasUNSPECIFIEDhttps://orcid.org/0000-0003-4653-7930UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Date:25 July 2022
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:SAR, echo time compression, fSTEC, FSCAN
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Leipzig, Germany
Event Type:international Conference
Event Dates:2022-07-25 - 2022-07-27
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Development of a mini-SAR
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Radar Concepts
Deposited By: Younis, Dr.-Ing. Marwan
Deposited On:09 Jun 2022 07:04
Last Modified:13 Jan 2023 14:46

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