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송규하,곽현규,김산해,정인환,이종환,이병남,Song, Kyuha,Kwak, Hyungyu,Kim, Sanhae,Jeong, Inhwan,Lee, Jonghwan,Lee, Byeongnam 한국군사과학기술학회 2022 한국군사과학기술학회지 Vol.25 No.3
In this paper, we analyze the performance of an FM radio based passive radar in the presence of deception jamming such as false-target generation. To do this, we examine the effects of applying the deception jamming signal to the passive radar through the derivation of the construction of the amplitude-range-Doppler(ARD) plot. The analysis results show that applying the deception jamming signal with the low power similar to the target echo signal generates false targets at positions set by the jamming variables compared to the real target position in the ARD plot. Also, it is possible to induce the jamming effect so that only false targets are detected by selecting appropriate jamming power. Simulations are included to verify the theoretical results and to discuss on the effectiveness of the deception jamming on the FM radio based passive radar.
김민겸 ( Min-kyeom Kim ),김승현 ( Seunghyun Kim ),윤재원 ( Jae-won Yun ),정효균 ( Jeong-hyo Gyun ),곽민준 ( Min-jun Kwak ),안예린 ( Yea-lin Ahn ),박찬욱 ( Chan-wook Park ),김윤철 ( Youn-chul Kim ),서종환 ( Jonghwan Suhr ) 한국복합재료학회 2021 Composites research Vol.34 No.4
적층제조 기술의 발전으로 복잡한 구조의 제조가 용이해짐에 따라, 기존에 존재하지 않은 특성을 지닌 메타물질에 대한 관심이 커지고 있다. 기존에 존재하지 않은 기계, 음향, 열, 전자기 및 광학 특성을 지닌 메타물질은 높은 공학응용(Engineering applications) 가능성을 보여, 새로운 메타물질 개발 및 설계방안에 대한 연구를 지속적으로 진행하고 있다. 이에 본 논문에서는 메타물질의 여러 특성 중 기존에 존재하지 않은 기계적 특성을 지닌 메타물질의 특성, 거동 및 물성을 소개하고 설계방안을 제시하고자 한다. 또한 설계한 메타물질을 제조하기 위해 여러 적층제조 방식별 메타물질 제조특성 들을 검토하여, 메타물질의 산업에서의 활용 가능성을 제시하고자 한다. As an additive manufacturing achieves technological advances, it enables to manufacture complex structures with saving a cost and time. Therefore, metamaterials, which has geometric complexity, have gradually gathered attention due to the unprecedented properties: the unprecedented mechanical, thermal, electromagnetic, and optical properties. The metamaterials could exhibit a high potential in engineering applications, and thus it has been steadily investigated to design or/and develop novel metamaterials. Here, mechanical metamaterials, which had been reported, were reviewed to suggest the way to design and fabricate the metamaterials for industrial applications.