적응빔 형성을 이용한 다중경로 환경 내 저고도 해상표적의 고각 추적 정확도 향상

국문 초록 (Abstract)

본 논문에서는 다중경로 환경에서 적응빔 형성 기법을 이용한 저고도 해상표적의 추적 정확도 향상 방법에 대해 제안하고, 이를 아날로그 빔 형성 능동위상배열(AESA: active electronically scanned array) 레이다 환경에 적용하여, 제안 방법이 반복 없는 적은 연산으로 비교적 높은 정확도의 표적 고각을 산출할 수 있음을 확인하였다. 제안 방법은 모노펄스(monopulse) 기울기 제어를 위한 기존의 적응빔 형성 제한조건에 부엽 제어 조건을 추가하고, 고각 변화 정도가 작은 저고도 해상표적의 특징을 활용하여 추적 정확도를 개선하였다. 또한 추적 정확도 향상을 위해 다양한 적응빔 형성 기법을 적용해 보고, 그 결과를 비교분석하였다.

다국어 초록 (Multilingual Abstract)

A method to improve the tracking accuracy of low-altitude sea targets is proposed using an adaptive beamforming algorithm in a multipath environment. It is confirmed that the target elevation can be estimated with relatively high accuracy without repetitive calculation using the proposed method in analog beamforming active electronically scanned array radar. The proposed method improves the tracking accuracy by adding a side-lobe suppression condition to the existing adaptive beamforming constraint for monopulse inclination control while accounting for the characteristics of the low-altitude sea target with less elevation change. In addition, various adaptive beamforming algorithms were applied to the proposed method, and the results were compared and analyzed to optimize tracking accuracy.

목차 (Table of Contents)

• 요약
• Abstract
• Ⅰ. 서론
• Ⅱ. 저고도 해상표적의 다중경로 환경
• Ⅲ. 적응빔 형성 기법을 활용한 다중경로 영향 억제
• Ⅳ. 적응빔 형성 기법에 따른 추적 정확도 분석
• Ⅴ. 결론
• References

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