The development of advanced spread spectrum LFM waveforms for enhanced SAR and GMTI

Advanced spread spectrum linear frequency modulated (LFM) waveforms are being developed for advanced capability synthetic aperture radar (SAR) and ground moving target indication (GMTI) applications. We have demonstrated by analysis and simulation the feasibility of these new type waveforms and are now in the process of implementing them in hardware. The basic approach is to combine a traditional LFM radar waveform with a direct sequence spread spectrum (DSSS) waveform, and then on receive to de-spread the return and capture the resultant LFM return for traditional matched filter processing and enhanced SAR and GMTI. We show the analysis, simulation and some preliminary hardware results.

[1]  M. E. Davis,et al.  Waveforms for simultaneous SAR and GMTI , 2012, 2012 IEEE Radar Conference.

[2]  Hongbin Li,et al.  Low Probability of Interception of an Advanced Noise Radar Waveform with Linear-FM , 2013, IEEE Transactions on Aerospace and Electronic Systems.

[3]  Mark-Anthony Govoni,et al.  Linear Frequency Modulation of Stochastic Radar Waveform , 2011 .

[4]  Mark E. Davis,et al.  Common waveform for simultaneous SAR and GMTI , 2011, 2011 IEEE RadarCon (RADAR).

[5]  Oscar Moreno,et al.  New Optimal Low Correlation Sequences for Wireless Communications , 2012, SETA.

[6]  Hongbin Li,et al.  Range-Doppler Resolution of the Linear-FM Noise Radar Waveform , 2013, IEEE Transactions on Aerospace and Electronic Systems.

[7]  Mark R. Bell,et al.  Diversity Waveform Sets for Delay-Doppler Imaging , 1998, IEEE Trans. Inf. Theory.

[8]  M.A. Temple,et al.  Point Spread Function Characterization of a Radially Displaced Scatterer Using Circular Synthetic Aperture Radar , 2007, 2007 IEEE Radar Conference.

[9]  John Clark,et al.  Initial experimental results using the noise correlation radar , 2013, Defense, Security, and Sensing.

[10]  Uttam Majumder,et al.  Spatially-varying calibration of along-track monopulse synthetic aperture radar imagery for ground moving target indication and tracking , 2010, 2010 IEEE Radar Conference.

[11]  Mark R. Bell,et al.  Diversity Waveform Signal Processing for Delay-Doppler Measurement and Imaging , 2002, Digit. Signal Process..

[12]  Mark A. Govoni,et al.  Radar spectrum spreading using advanced pulse compression noise (APCN) , 2014, 2014 IEEE Radar Conference.

[13]  M. J. Minardi,et al.  Comparison of SAR based GMTI and standard GMTI in a dense target environment , 2006, SPIE Defense + Commercial Sensing.

[14]  Muralidhar Rangaswamy,et al.  A novel approach for designing diversity radar waveforms that are orthogonal on both transmit and receive , 2013, 2013 IEEE Radar Conference (RadarCon13).

[15]  Erik Blasch,et al.  Radar signals dismount tracking for urban operations , 2006, SPIE Defense + Commercial Sensing.