Abstract
Abstract This paper deals with the method to classify the aircraft target by analyzing its JEM signal. We propose the method to classify the engine model by analyzing JEM spectrum using the harmonic frequency mask generated from the blade information of jet engine. The proposed method does not need the complicated logic algorithm to find the chopping frequency in each rotor stage and the pre-simulated engine spectrum DB used in the previous methods. In addition, we propose the method to estimate the precise spool rate and it reduces the error in estimating the number of blades or in calculating the harmonic frequency of frequency mask.Key words: JEM(Jet Engine Modulation), Target Classification, RTS(Radar Target Signature) klmnop(Agency for Defense Development)Manuscript received November 5, 2013 ; Revised January 2, 2014 ; Accepted January 24, 2014. (ID No. 20131105-109)Corresponding Author: Si-Ho Kim (e-mail: sihokim@add.re.kr) q. 서 론 r s(radar)`t3 uVevOw 'l xG, yzIb{ Dd() |R}~Zd*e, %z2- O7 XY Z[X
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