Joint Time-Frequency Analysis of Radar Micro-Doppler Signatures from Aircraft Engine Models

H. Lim Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea

J. H. Park Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea

J. H. Yoo Agency for Defense Development, Yuseong P. O. Box 35-3, Daejeon 305-600, Korea

C. H. Kim Agency for Defense Development, Yuseong P. O. Box 35-3, Daejeon 305-600, Korea

K. I. Kwon Agency for Defense Development, Yuseong P. O. Box 35-3, Daejeon 305-600, Korea

N. H. Myung Department of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea

Abstract

Micro-Doppler signatures from four CAD aircraft engine models and one experimental engine model are analyzed using joint time-frequency analysis (JTFA). The signatures are obtained from shooting and bouncing rays (SBR) simulation for the CAD models and from measurement for the experimental model. The JTFA results give additional useful physical feature information regarding the respective engines, such as whether the number of blades is odd or even and the length of blades, in addition to the number of blades, which can be extracted by traditional spectrum analysis.

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Joint Time-Frequency Analysis of Radar Micro-Doppler Signatures from Aircraft Engine Models

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Joint Time-Frequency Analysis of Radar Micro-Doppler Signatures from Aircraft Engine Models

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