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Small Satellite Dispersed Synthetic Aperture Radar

Mittermayer, Josef and Lopez-Dekker, Paco and Kraus, Thomas and Krieger, Gerhard (2016) Small Satellite Dispersed Synthetic Aperture Radar. 4S Symposium - Small Satellites Systems and Services, 2016-05-30 - 2016-06-03, Valletta, Malta.

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An application example is used to compare several SAR satellite configurations. The application is “Wide-Area Ship Detection combined with High Resolution Ship Imaging”. A phased array reference configuration that is based on a single large satellite is described. The limitations of this configuration are discussed, especially in terms of swath width and power, or rather Noise Equivalent Sigma Zero (NESZ). Phase centers of the reference single phased array antenna, which are acquired in a time sequence, are substituted by simultaneously acquired phase centers of a fractionated configuration with one transmit and several small receive satellites. The along track satellite separation can considerably be extended by a dispersed configuration of small satellites. The dispersed configuration is described and the phase center coverage is mathematically proven. An analysis method is proposed that verifies the coverage of all required phase centers, and a phase center repetition factor is defined. Finally, a feasible dispersed system concept for the exemplary application is provided with a geometric resolution of 10 m at 1300 km swath width in the ship detection mode. In the ship imaging mode a resolution of 1 m is achieved.

Item URL in elib:https://elib.dlr.de/103270/
Document Type:Conference or Workshop Item (Speech)
Title:Small Satellite Dispersed Synthetic Aperture Radar
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Mittermayer, JosefUNSPECIFIEDhttps://orcid.org/0000-0001-7238-4240UNSPECIFIED
Kraus, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-9486-7371UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Date:30 May 2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Dispersed SAR, Small Satellite
Event Title:4S Symposium - Small Satellites Systems and Services
Event Location:Valletta, Malta
Event Type:international Conference
Event Dates:2016-05-30 - 2016-06-03
Organizer:ESA Conference Bureau
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 - SAR Expert Support Lab
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Mittermayer, Dr.-Ing. Josef
Deposited On:02 Mar 2016 15:57
Last Modified:16 Jan 2017 18:26

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