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Advanced Spaceborne SAR Systems with Planar Antenna

Villano, Michelangelo and Krieger, Gerhard and Moreira, Alberto (2017) Advanced Spaceborne SAR Systems with Planar Antenna. In: 2017 IEEE Radar Conference, RadarConf 2017. IEEE Radar Conference (RadarCon), 2017-05-08 - 2017-05-12, Seattle, USA. doi: 10.1109/RADAR.2017.7944188.

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Synthetic aperture radar (SAR) remote sensing allows high-resolution imaging independent of weather conditions and sunlight illumination and is therefore very attractive for the systematic observation of dynamic processes on the Earth’s surface. Conventional spaceborne SAR systems are, however, limited in that a wide swath can only be imaged at the expense of a degraded azimuth resolution. This limitation can be overcome by using SAR systems with multiple receive subapertures displaced in along-track, ScanSAR systems with multiple azimuth channels, or multiple elevation beam SAR systems, which use digital beamforming (DBF) on receive for simultaneous mapping of multiple subswaths. In the latter case, a combined transmit-receive planar phased array antenna can be employed, using phase-only tapering to form a wide transmit beam, while exploiting all the available power and ensuring the best possible efficiency of the high power transmit modules. A parametric closed-form expression for the phase tapers can be analytically derived, which result in a wide transmit beam optimized for noise and ambiguity performance.

Item URL in elib:https://elib.dlr.de/112501/
Document Type:Conference or Workshop Item (Speech)
Title:Advanced Spaceborne SAR Systems with Planar Antenna
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Villano, MichelangeloUNSPECIFIEDhttps://orcid.org/0000-0002-1769-6927UNSPECIFIED
Krieger, GerhardUNSPECIFIEDhttps://orcid.org/0000-0002-4548-0285UNSPECIFIED
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Date:May 2017
Journal or Publication Title:2017 IEEE Radar Conference, RadarConf 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Antenna; digital beamforming (DBF); phased array; phase-only tapering; spaceborne synthetic aperture radar (SAR)
Event Title:IEEE Radar Conference (RadarCon)
Event Location:Seattle, USA
Event Type:international Conference
Event Start Date:8 May 2017
Event End Date:12 May 2017
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 - Vorhaben Tandem-L Vorstudien (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Radar Concepts
Deposited By: Villano, Dr.-Ing. Michelangelo
Deposited On:01 Jun 2017 16:21
Last Modified:24 Apr 2024 20:17

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