Moving Target Detection by Forcusing for Frequency Domain Algorithms in UWB Low Frequency SAR

Moving target detection at low radar frequencies is associated with long integration time and has to handle azimuth focusing for reliable detection. The detection by focusing in which time-domain is the basis for the focusing approach has been proposed and successfully experimented in reality. The main objective of this paper is to apply and evaluate the detection method for frequency-domain algorithms. Range Migration Algorithm (RM) is chosen as a candidate for this study due to the accuracy of the algorithm with very wide integration angles. The simulated SAR data, which is used in this study, is based on the parameters of a airborne UWB low frequency system such as CARABASII.

[1]  L. Andersson.  On the determination of a function from spherical averages , 1988 .

[2]  F. Rocca,et al.  SAR data focusing using seismic migration techniques , 1991 .

[3]  D. Sheen,et al.  UHF wideband SAR design and preliminary results , 1994, Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium.

[4]  A.D. Lazarov,et al.  SAR Imaging of a Moving Target , 2007, 2007 3rd International Conference on Recent Advances in Space Technologies.

[5]  A. F. Yegulalp.  Fast backprojection algorithm for synthetic aperture radar , 1999, Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249).

[6]  Lars M. H. Ulander,et al.  Airborne array aperture UWB UHF radar-motivation and system considerations , 1999, Proceedings of the 1999 IEEE Radar Conference. Radar into the Next Millennium (Cat. No.99CH36249).

[7]  I. Cumming,et al.  A Digital Processor for the Production of Seasat Synthetic Aperture Radar Imagery , 1979 .

[8]  Hans-Jurgen Zepernick,et al.  Experimental Results on Moving Targets Focusing in UWB Low Frequency SAR , 2007 .

[9]  Mohammed Jahangir,et al.  Utilising signal absence in SAR imagery for moving target detection , 2006 .

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

[11]  R. G. White,et al.  Moving target detection in SAR imagery: experimental results , 1995, Proceedings International Radar Conference.

[12]  Lars M. H. Ulander,et al.  Synthetic-aperture radar processing using fast factorized back-projection , 2003 .

[13]  M. Rangaswamy,et al.  Detecting multiple slow-moving targets in SAR images , 2004, Processing Workshop Proceedings, 2004 Sensor Array and Multichannel Signal.

[14]  J.H.G. Ender.  Space-time processing for multichannel synthetic aperture radar , 1999 .

[15]  Mats I. Pettersson.  Optimum relative speed discretisation for detection of moving objects in wide band SAR , 2007 .

[16]  W. Pierson,et al.  Change detection for low-frequency SAR ground surveillance , 2005 .

[17]  R. Keith Raney,et al.  Precision SAR processing using chirp scaling , 1994, IEEE Trans. Geosci. Remote. Sens..

[18]  M. Pettersson,et al.  Detection of moving targets in wideband SAR , 2004, IEEE Transactions on Aerospace and Electronic Systems.

[19]  Jen King Jao,et al.  Theory of synthetic aperture radar imaging of a moving target , 2001, IEEE Trans. Geosci. Remote. Sens..

[20]  P.-O. Frolind,et al.  Development and operation of an airborne VHF SAR system-lessons learned , 1998, IGARSS '98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings. (Cat. No.98CH36174).