[논문]Eigenvalue Gap의 Ratio를 이용한 신호 개수 추정 방법 및 Rayleigh Fading 환경에서의 신호 개수 추정 성능 비교

김태영; 이윤성; 박찬홍; 최영윤; 김기선; 이동근; 이명식; 강현진

doi:10.9766/kimst.2021.24.5.492

Eigenvalue Gap의 Ratio를 이용한 신호 개수 추정 방법 및 Rayleigh Fading 환경에서의 신호 개수 추정 성능 비교
Source Enumeration Method using Eigenvalue Gap Ratio and Performance Comparison in Rayleigh Fading 원문보기

韓國軍事科學技術學會誌 = Journal of the KIMST, v.24 no.5, 2021년, pp.492 - 502

김태영 (광주과학기술원 전자전특화연구센터) , 이윤성 (광주과학기술원 전자전특화연구센터) , 박찬홍 (광주과학기술원 전자전특화연구센터) , 최영윤 (광주과학기술원 전기전자컴퓨터공학부) , 김기선 (광주과학기술원 전기전자컴퓨터공학부) , 이동근 (국방과학연구소 레이다) , 이명식 (LIG넥스원(주) 전자전연구소) , 강현진 (LIG넥스원(주) 전자전연구소)

Abstract ▼ AI-Helper

In electronic warfare, source enumeration and direction-of-arrival estimation are important. The source enumeration method based on eigenvalues of covariance matrix from received is one of the most used methods. However, there are some drawbacks such as accuracy less than 100 % at high SNR, poor performance at low SNR and reduction of maximum number of estimating sources. We suggested new method based on eigenvalues gaps, which is named AREG(Accumulated Ratio of Eigenvalues Gaps). Meanwhile, FGML(Fast Gridless Maximum Likelihood) which reconstructs the covariance matrix was suggested by Wu et al., and it improves performance of the existing source enumeration methods without modification of algorithms. In this paper, first, we combine AREG with FGML to improve the performance. Second, we compare the performance of source enumeration and direction-of-arrival estimation methods in Rayleigh fading. Third, we suggest new method named REG(Ratio of Eigenvalues Gaps) to reduce performance degradation in Rayleigh Fading environment of AREG.

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Eigenvalue Gap의 Ratio를 이용한 신호 개수 추정 방법 및 Rayleigh Fading 환경에서의 신호 개수 추정 성능 비교
Source Enumeration Method using Eigenvalue Gap Ratio and Performance Comparison in Rayleigh Fading 원문보기

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Eigenvalue Gap의 Ratio를 이용한 신호 개수 추정 방법 및 Rayleigh Fading 환경에서의 신호 개수 추정 성능 비교 Source Enumeration Method using Eigenvalue Gap Ratio and Performance Comparison in Rayleigh Fading 원문보기

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Eigenvalue Gap의 Ratio를 이용한 신호 개수 추정 방법 및 Rayleigh Fading 환경에서의 신호 개수 추정 성능 비교
Source Enumeration Method using Eigenvalue Gap Ratio and Performance Comparison in Rayleigh Fading 원문보기