Agile waveforms for joint SAR-GMTI processing

Steven Jaroszewski; Allan Corbeil; Stephen McMurray; Uttam Majumder; Mark R. Bell; Jeffrey Corbeil; Michael Minardi

doi:10.1117/12.2224768

14 May 2016 Agile waveforms for joint SAR-GMTI processing

Steven Jaroszewski; Allan Corbeil; Stephen McMurray; Uttam Majumder; Mark R. Bell; Jeffrey Corbeil; Michael Minardi

Author Affiliations +

Proceedings Volume 9843, Algorithms for Synthetic Aperture Radar Imagery XXIII; 984308 (2016) https://doi.org/10.1117/12.2224768
Event: SPIE Defense + Security, 2016, Baltimore, Maryland, United States

Abstract

Wideband radar waveforms that employ spread-spectrum techniques were investigated and experimentally tested. The waveforms combine bi-phase coding with a traditional LFM chirp and are applicable to joint SAR-GMTI processing. After de-spreading, the received signals can be processed to support simultaneous GMTI and high resolution SAR imaging missions by airborne radars. The spread spectrum coding techniques can provide nearly orthogonal waveforms and offer enhanced operations in some environments by distributing the transmitted energy over a large instantaneous bandwidth. The LFM component offers the desired Doppler tolerance. In this paper, the waveforms are formulated and a shift-register approach for de-spreading the received signals is described. Hardware loop-back testing has shown the feasibility of using these waveforms in experimental radar test bed.

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Steven Jaroszewski, Steven Jaroszewski, Allan Corbeil, Allan Corbeil, Stephen McMurray, Stephen McMurray, Uttam Majumder, Uttam Majumder, Mark R. Bell, Mark R. Bell, Jeffrey Corbeil, Jeffrey Corbeil, Michael Minardi, Michael Minardi, } "Agile waveforms for joint SAR-GMTI processing", Proc. SPIE 9843, Algorithms for Synthetic Aperture Radar Imagery XXIII, 984308 (14 May 2016); doi: 10.1117/12.2224768; https://doi.org/10.1117/12.2224768

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