AN EFFICIENT SAR JAMMER WITH DIRECT RADIO FREQUENCY PROCESSING (DRFP)

DRFM (Digital Radio Frequency Memory) is now widely utilized by modern radar jammers due to its high e-ciency in jamming generation. However, its jammer structure is somewhat complex, since the up-conversion and down-conversion processes must be included. This paper proposes a new Synthetic Aperture Radar (SAR) jammer architecture utilizing Direct Radio Frequency Processing (DRFP), wherein both the up-conversion and down-conversion modules can be excluded. DRFP has a very compact hardware structure which employs Direct Digital Synthesizer (DDS), phase shifter, and delay lines for jamming modulation. Finally, the performances of DRFP are shown by both the inner-fleld test and a rail-way SAR experiment to be rather efiective in jamming generation.

[1]  Joachim H. G. Ender,et al.  Multi-channel SAR/MTI system development at FGAN: from AER to PAMIR , 2002, IEEE International Geoscience and Remote Sensing Symposium.

[2]  Raja Syamsul Azmir Raja Abdullah,et al.  A Circular Synthetic Aperture Radar for on-the-Ground Object Detection , 2012 .

[3]  V. Mrstik.  Agile-beam synthetic aperture radar opportunities , 1998 .

[4]  K. Dumper,et al.  Spaceborne synthetic aperture radar and noise jamming , 1997 .

[5]  Yanping Wang,et al.  Convolution Back-Projection Imaging Algorithm for Downward-Looking Sparse Linear Array Three Dimensional Synthetic Aperture Radar , 2012 .

[6]  Jian Dong,et al.  A STRIP-MAP SAR COHERENT JAMMER STRUCTURE UTILIZING PERIODIC MODULATION TECHNOLOGY , 2011 .

[7]  Jian Dong,et al.  THE "SLOPE" EFFECT OF COHERENT TRANSPONDER IN INSAR DEM , 2012 .

[8]  Poi Ngee Tan,et al.  A New Unmanned Aerial Vehicle Synthetic Aperture Radar for Environmental Monitoring , 2012 .

[9]  Wang Xue-song,et al.  Study on SAR jamming measures , 2007 .

[10]  A.S. Paine.  An Adaptive Beamforming Technique for Countering Synthetic Aperture Radar (SAR) Jamming Threats , 2007, 2007 IEEE Radar Conference.

[11]  X. Wang,et al.  POLARIMETRIC SAR TOMOGRAPHY USING l2,1 MIXED NORM SPARSE RECONSTRUCTION METHOD , 2012, Progress In Electromagnetics Research.

[12]  Shunping Xiao,et al.  SAR active-decoys jamming based on DRFM , 2009 .

[13]  Huanzhang Lu,et al.  Evaluation of SAR Jamming Performance , 2007, 2007 International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications.

[14]  X. Wang,et al.  The Interferometry Phase of InSAR Coherent Jamming with Arbitrary Waveform Modulation , 2012 .

[15]  Noh-Hoon Myung,et al.  Shifting MIMO SAR System for High-Resolution Wide-Swath Imaging , 2011 .

[16]  Wei Zhou,et al.  SIGNAL MODEL AND MOVING TARGET DETECTION BASED ON MIMO SYNTHETIC APERTURE RADAR , 2012 .

[17]  C. J. Condley.  Some system considerations for electronic countermeasures to synthetic aperture radar , 1991 .