Advanced digital beamforming concepts for future SAR systems

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.

[1]  Sigurd Huber,et al.  Performance Comparison of Reflector- and Planar-Antenna Based Digital Beam-Forming SAR , 2009 .

[2]  Sigurd Huber,et al.  A novel digital beam-forming concept for spaceborne reflector SAR Systems , 2009, 2009 European Radar Conference (EuRAD).

[3]  Gerhard Krieger,et al.  Multidimensional Waveform Encoding: A New Digital Beamforming Technique for Synthetic Aperture Radar Remote Sensing , 2008, IEEE Transactions on Geoscience and Remote Sensing.

[4]  Gerhard Krieger,et al.  Interferometric Synthetic Aperture Radar (SAR) Missions Employing Formation Flying , 2010, Proceedings of the IEEE.

[5]  Gerhard Krieger,et al.  Advanced Concepts for Ultra-Wide-Swath SAR Imaging , 2008 .

[6]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[7]  Gerhard Krieger,et al.  Ultra-Wide Swath SAR Imaging with Continuous PRF Variation , 2010 .

[8]  G. Krieger,et al.  The tandem-L mission proposal: Monitoring earth's dynamics with high resolution SAR interferometry , 2009, 2009 IEEE Radar Conference.

[9]  M. Suess,et al.  A novel high resolution, wide swath SAR system , 2001, IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217).

[10]  Michael Spencer,et al.  The Soil Moisture Active/Passive (SMAP) mission radar: A novel conically scanning SAR , 2009, 2009 IEEE Radar Conference.

[11]  John C. Curlander,et al.  Synthetic Aperture Radar: Systems and Signal Processing , 1991 .

[12]  Xiaoqing Pi,et al.  Deformation, Ecosystem Structure, and Dynamics of Ice (DESDynI) , 2008, 2008 IEEE Aerospace Conference.

[13]  G. Krieger,et al.  SweepSAR: Beam-forming on receive using a reflector-phased array feed combination for spaceborne SAR , 2009, 2009 IEEE Radar Conference.

[14]  I. Longstaff,et al.  Wide-swath space-borne SAR using a quad-element array , 1999 .

[15]  John B. Shoven,et al.  I , Edinburgh Medical and Surgical Journal.

[16]  Buford R. Jean,et al.  A Multiple Beam Synthetic Aperture Radar Design Concept for Geoscience Applications , 1983, IEEE Transactions on Geoscience and Remote Sensing.

[17]  Gerhard Krieger,et al.  Multichannel Azimuth Processing in ScanSAR and TOPS Mode Operation , 2010, IEEE Transactions on Geoscience and Remote Sensing.

[18]  M. A. Brown,et al.  Wide-swath SAR , 1992 .