volume | PIER Journals

Abstract

Inverse synthetic aperture radar (ISAR) imaging is an effective method to identify unknown targets regardless of weather and illumination conditions. Research results published regarding this topic have focused mainly on imaging and automatic target recognition (ATR) of single targets. However, targets generally fly in formation, so the applicability of ISAR images to ATR of multiple targets must be studied. This paper proposes an ATR procedure for targets flying in formation. ATR accuracy derived using five targets composed of point scatterers and the measured radar signal of a Boeing747 aircraft was as high as that of the solo flight in terms of SNR and the size of the training database; this result shows that ISAR is an adequate tool for ATR even if an image is contaminated by radar reflections from neighboring targets.

1. Park, S.-H., M.-G. Joo, and K.-T. Kim, "Construction of ISAR training database for automatic target recognition," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 11-12, 1493-1503, 2011.
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doi:10.2528/PIER10071901 Google Scholar

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doi:10.1163/156939309789932322 Google Scholar

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doi:10.2528/PIER09062602 Google Scholar

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doi:10.1163/156939308784159390 Google Scholar

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12. Jung, J.-H., K.-T. Kim, S.-H. Kim, and S.-H. Park, "An efficient ISAR imaging method for multiple targets," Progress In Electromagnetics Research, Vol. 146, 133-142, 2014.
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18. Jung, J.-H., K.-T. Kim, and S.-H. Park, "Removal of JEM signal by accurate estimation of initial parameters of chirplet basis functions," Progress In Electromagnetics Research, Vol. 141, 607-618, 2013.
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Prof. Sang-Hong Park