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http://dx.doi.org/10.6109/jkiice.2022.26.8.1213

Design of Over-sampled Channelized DRFM Structure in order to Remove Interference and Prevent Spurious Signal  

Kim, Yo-Han (Electronic Warfare R&D Center, LIG Nex1 Co.,Ltd.)
Hong, Sang-Guen (Electronic Warfare R&D Center, LIG Nex1 Co.,Ltd.)
Seo, Seung-Hun (Electronic Warfare R&D Center, LIG Nex1 Co.,Ltd.)
Jo, Jung-Hun (Electronic Warfare R&D Center, LIG Nex1 Co.,Ltd.)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.26, no.8, 2022 , pp. 1213-1221 More about this Journal
Abstract
In Electronic Warfare, the need to develop a jamming system that protects our location information from enemy radar is constantly increasing. The jamming system normally uses wide-band DRFM(Digital Radio Frequency Memory) that processes the entire bandwidth at once. However, it is difficult to jam if there is a CW(Continuous Wave) interference signal in the band. Recently, instead of wide-band signal processing, a structure using a filter bank that divides the entire band into several sub-bands and processes each sub-band independently has been proposed. Although it is possible to handle interference signal through the filter bank structure, spurious signal occurs when the signal is received at a boundary frequency between sub-bands. Spurious signal makes a output power of jamming signal distributed, resulting in lower JSR(Jamming to Signal Ratio) and less jamming effect. This paper proposes an over-sampled channelized DRFM structure that enables interference response and prevents spurious signal for sub-band boundary frequency input.
Keywords
DRFM(Digital Radio Frequency Memory); Channelized DRFM; AFB(Analysis Filter Bank); SFB(Synthesis Filter Bank);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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