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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.
FM 방송 기반 멀티스태틱 PCL 시스템 원형 배열 안테나 보정을 위한 Array Manifold 측정 및 검증
박준식,심홍석,안준일,송규하,Park, Junsik,Shim, Hongsuk,Ahn, Junil,Song, Kyuha 한국군사과학기술학회 2021 한국군사과학기술학회지 Vol.24 No.2
This study describes a method of measurement and verification of array manifold of uniform circular array antenna applicable to multistatic Passive Coherent Location(PCL) system using FM broadcasting. In an environment of outdoor test where FM broadcast signals are scattered, array manifold measurement methods using network analyzer and multi-channel digital receiver are introduced. Also, the descriptions and solutions for the test limits of each measurement method and the considerations affecting the measurement accuracy are presented. In addition, to verify the validity of the measured array manifold, the gain and phase difference were compared with the array manifold data obtained by EM simulation, and the effectiveness and accuracy of the measured array manifolds were compared and analyzed by estimating the direction of arrival of the FM broadcast signal received from the multistatic PCL system.