| Modeling and Analysis of Radar Target Signatures in the VHF-Band Using Fast Chirplet Decomposition |
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Ji-hoon Park, Si-ho Kim, Dae-Young Chae |
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The 3rd Research and Development Institute, Agency of Defense Development |
| 고속 Chirplet 분리기법을 이용한 VHF 대역 레이더 표적신호 모델링 및 해석 |
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박지훈, 김시호, 채대영 |
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국방과학연구소 제3기술연구본부 |
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| Abstract |
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Although radar target signatures(RTS), such as range profiles have played an important role for target recognition in the X-band radar, they would be less effective when a target is designed to have low radar cross section(RCS). Recently, a number of research groups have conducted the studies on the RTS in the VHF-band where such targets can be better detected than in the X-band. However, there is a lack of work carried out on the mathematical description of the VHF-band RTS. In this paper, chirplet decomposition is employed for modeling of the VHF-band RTS and its performance is compared with that of existing scattering center model generally used for the X-band. In addition, the discriminative signal analysis is performed by chirplet parameterization of range profiles from in an ISAR image. Because the chirplet decomposition takes long computation time, its fast form is further proposed for enhanced practicality. |
| Key Words:
Radar Target Signature, VHF-Band, Range Profile, Inverse Synthetic Aperture Radar Image, Fast Chirplet Decomposition |
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