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GMTI clutter cancellation using real non-ideal data

Banahan, CP; Perks, D; Baker, C; Woodbridge, K; (2010) GMTI clutter cancellation using real non-ideal data. IET RADAR SONAR NAV , 4 (2) 302 - 314. 10.1049/iet-rsn.2009.0057.

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The performance of displaced phase centre antenna (DPCA), adaptive DPCA (ADPCA) and joint domain localised space time adaptive processing (JDL-STAP) was examined when applied to data that were not gathered for ground moving target indication (GMTI) purposes, and using very few array elements. Three different methods to be applied at the pre-processing stage to match pulses from different spatial channels were compared. The ADPCA method was shown to be the most robust in the presence of signals leaked from other range cells while traditional DPCA proved to be the most effective at attenuating stationary targets in non-ideal conditions, providing that pre-processing, using a pulse shift and a ramp in phase, was applied to the data. Quantitative results are presented, which are drawn from real experiments using real airborne radar data and which provide a valuable insight into the tolerance of DPCA, ADPCA and STAP when put to use with few spatial channels on non-ideal data. The study shows that all three GMTI algorithms used with few antenna elements can successfully resolve moving targets from clutter in such data and discusses the limitations of each in suppressing unwanted stationary peaks.

Type: Article
Title: GMTI clutter cancellation using real non-ideal data
DOI: 10.1049/iet-rsn.2009.0057
URI: http://discovery.ucl.ac.uk/id/eprint/71933
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