Ground Moving Target Indication in SAR Images by Symmetric Defocusing

A new algorithm is presented to indicate ground moving targets in synthetic aperture radar images. Two filters, which differ only in the signs of the phase responses, are used to defocus the complex image respectively. In the two defocused images, each stationary target is blurred to the same extent, but each moving target is blurred to different extents. Therefore, moving targets can be indicated by the patch-by-patch sharpness comparison of the two defocused images. The results of the simulated and real data show that this algorithm is effective and efficient.

[1]  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.

[2]  J.M.B. Dias,et al.  Multiple moving target detection and trajectory estimation using a single SAR sensor , 2003 .

[3]  Delphine Cerutti-Maori,et al.  Optimum GMTI Processing for Space-based SAR/GMTI Systems - Theoretical Derivation , 2010 .

[4]  Christoph H. Gierull,et al.  The influence of target acceleration on velocity estimation in dual-channel SAR-GMTI , 2006, IEEE Transactions on Geoscience and Remote Sensing.

[5]  Debora Pastina,et al.  Change detection based GMTI on single channel SAR images , 2008 .

[6]  Junfeng Wang,et al.  Minimum-entropy phase adjustment for ISAR , 2004 .

[7]  Thomas Pernstål,et al.  STAP analysis using multi-channel airborne radar data from flight trials , 2010, 2010 IEEE Radar Conference.

[8]  J. Fienup.  Detecting moving targets in SAR imagery by focusing , 2001 .

[9]  S.K. Wong.  High Range Resolution Profiles as Motion-Invariant Features for Moving Ground Targets Identification in SAR-Based Automatic Target Recognition , 2009, IEEE Transactions on Aerospace and Electronic Systems.

[10]  Guisheng Liao,et al.  Ground Moving Targets Imaging Algorithm for Synthetic Aperture Radar , 2011, IEEE Transactions on Geoscience and Remote Sensing.

[11]  Uwe Stilla,et al.  Theme issue: “Airborne and spaceborne traffic monitoring” , 2006 .

[12]  Richard Bamler,et al.  Detection of Along-Track Ground Moving Targets in High Resolution Spaceborn SAR Images , 2006 .

[13]  Peter Weber,et al.  Space-based radar signal processing baselines for air, land and sea applications , 2000 .

[14]  Junfeng Wang,et al.  Velocity estimation of moving targets using SAR , 2011, 2011 IEEE International Geoscience and Remote Sensing Symposium.

[15]  Gerhard Krieger,et al.  Real-time road traffic monitoring using a fast a priori knowledge based SAR-GMTI algorithm , 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.

[16]  Franz J. Meyer,et al.  Traffic monitoring with spaceborne SAR - Theory, simulations, and experiments , 2007, Comput. Vis. Image Underst..

[17]  C. H. Gierull.  Ground moving target parameter estimation for two-channel SAR , 2006 .

[18]  C. Gierull,et al.  Compensating the effects of target acceleration in dual-channel SAR-GMTI , 2006 .

[19]  P. Marques,et al.  Moving Targets Processing in SAR Spatial Domain , 2007, IEEE Transactions on Aerospace and Electronic Systems.