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Sparsity-Driven GMTI Processing Framework With Multichannel SAR
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DOI：10.1109/TGRS.2018.2866760.png)
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摘要
En 中文
This paper presents a processing framework to separate moving targets from the clutter, under multichannel synthetic aperture radar (SAR) scenarios, and addresses the moving target imaging and velocity estimation problems for ground moving target indication (GMTI) applications. A practical implementation is introduced to break the SAR/GMTI problem into two processing stages, and the sparsity of the moving targets in the observed scene is exploited throughout the stages. The two-stage process extracts the moving targets from the monitored region via a sparsity-based iterative decomposition algorithm and subsequently estimates the complete velocity vectors of moving targets by enforcing sparsity constraints. The model is sufficiently versatile to incorporate digital elevation map information, which further improves the moving target relocation accuracy. The effectiveness of the presented framework is demonstrated using the Air Force Research Laboratory Gotcha GMTI challenge data.
Keyword:
Compressed sensing
digital elevation map
ground moving target indication (GMTI)
sparsity
synthetic aperture radar (SAR)
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期刊
IF:
8.6
论文数:
2.1W
被引数:
10.7W
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