항공기 레이다에 있어 두 개의 주파수를 사용하였을 때 저고도 표적 다중경로 각도 추정의 CRLB (Cramér-Rao Lower Bound of Multipath Angle Estimation for Low-Flying Target of Dual-Frequency Airborne Radar)

서지정보

· 발행기관 : 한국전자파학회
· 수록지 정보 : 한국전자파학회 논문지 / 30권 / 5호 / 373 ~ 379페이지
· 저자명 : 정지현, 김진욱, 이주현, 전주환, 오유근, 서진배

초록

If two signals with the same single-tone frequency and differing phases impinge simultaneously on an antenna at slightly differing angles, then a large error in the angle estimation might occur if the phase difference is either 0° or 180°. This phenomenon might arise with an airborne fire-control radar, which has a relatively small bandwidth, for a low-flying target over the sea or terrain surface. In this paper, we show that the Cramér-Rao lower bound for such a target can be significantly lowered with the use of two frequencies.

영어초록

If two signals with the same single-tone frequency and differing phases impinge simultaneously on an antenna at slightly differing angles, then a large error in the angle estimation might occur if the phase difference is either 0° or 180°. This phenomenon might arise with an airborne fire-control radar, which has a relatively small bandwidth, for a low-flying target over the sea or terrain surface. In this paper, we show that the Cramér-Rao lower bound for such a target can be significantly lowered with the use of two frequencies.

참고자료

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