Advanced digital beamforming concepts for future SAR systems

Author

Krieger, G. ; Younis, M. ; Gebert, N. ; Huber, S. ; Bordoni, F. ; Patyuchenko, A. ; Moreira, A.

Author_Institution

Microwaves & Radar Inst., German Aerosp. Center (DLR), Wessling, Germany

fYear

2010

fDate

25-30 July 2010

Firstpage

245

Lastpage

248

Abstract

This paper reviews advanced multi-channel SAR system concepts for the imaging of wide swaths with high resolution. Several novel system architectures employing both direct radiating arrays and reflector antennas fed by a digital array are introduced and compared to each other with regard to their imaging performance. In addition, innovative SAR imaging modes are proposed which enable the mapping of ultra-wide swaths with high azimuth resolution. The new techniques and technologies have the potential to enhance the imaging performance of future SAR systems by one order of magnitude if compared to state of the art SAR sensors like TerraSAR-X, ALOS, Radarsat-2 or Sentinel-1.

Keywords

antenna arrays; array signal processing; radar imaging; reflector antennas; synthetic aperture radar; SAR imaging mode; azimuth resolution; digital array; digital beamforming; direct radiating array; multichannel SAR system; reflector antenna; ultra-wide swath; Azimuth; Feeds; Image resolution; Radar imaging; Spaceborne radar; Synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International

Conference_Location

Honolulu, HI

ISSN

2153-6996

Print_ISBN

978-1-4244-9565-8

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2010.5650516

Filename

5650516