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논문 기본 정보

자료유형
학술저널
저자정보
Sanghyun Choi (Korea Aerospace Industries) Hoongee Yang (Kwangwoon University) Jimin Song (Renault Samsung Motors) Hyeonmu Jeon (Hanwha Systems) Jongmann Kim (Agency for Defense Development) Yongseek Chung (Kwangwoon University)
저널정보
한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.21 No.2
발행연도
2021.4
수록면
134 - 142 (9page)

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The accurate estimation of clutter covariance matrix (CCM) is essential in designing a radar detector/filter to suppress sea clutter. This estimation might not be easily accomplished because of the scarcity of valid training vectors adjacent to the range cell under test (CUT). We propose a new CCM estimation algorithm that is derived by modeling time-series clutter returns into a clutter Doppler spectrum in the frequency domain and exploiting mutual independence among spectral components. To justify its excellence over the conventional sample covariance matrix (SCM) algorithm, we design two filters—a maximum signal-to-interference-plus-noise ratio (SINR)-based filter and a whitening filter—that use the estimated CCMs and compare their performance in a numerically simulated sea clutter scenario. Comparisons are made by showing the eigenvector spectra of the estimated CCMs and the frequency responses and outputs of the filters. Moreover, SINRs at the target Doppler bin are examined and compared with a theoretical, analytically derived SINR.

목차

Abstract
Ⅰ. INTRODUCTION
Ⅱ. CCM MODELING AND ESTIMATION
Ⅲ. FILTER CONSTRUCTION USING ESTIMATED CCM
Ⅳ. SIMULATIONS
Ⅴ. CONCLUSION
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