Browse > Article
http://dx.doi.org/10.5515/KJKIEES.2019.30.5.380

Fast Preprocessing Technique based on High-Pass Filtering for Spool Rate Extraction of Weak JEM Signals  

Song, Won-Young (School of Electrical Engineering, KAIST)
Kim, Hyung-Ju (School of Electrical Engineering, KAIST)
Kim, Sung-Tai (Hanwha Systems Co., Ltd.)
Shin, In-Seon (Hanwha Systems Co., Ltd.)
Myung, Noh-Hoon (School of Electrical Engineering, KAIST)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.30, no.5, 2019 , pp. 380-388 More about this Journal
Abstract
Jet engine modulation(JEM) signals are widely used for target recognition. These signals coming from a potentially hostile aircraft provide specific information about the jet engine. In order to obtain the number of blades, which is uniquely provided by the JEM signal, one must extract the spool rate, which is the rotation speed of the blades. In this paper, we propose an algorithm to extract the spool rate from a weak JEM signal. A criterion is developed to extract the spool rate from the JEM signal by analyzing the intensity of the JEM signal component. The weak signal is first subjected to a high-pass filtering-based process, which modifies it to facilitate spool rate extraction. We then apply a peak detection process and extract the spool rate. The technique is simpler than the existing CEMD or WD method, is accurate, and greatly reduces the time required.
Keywords
High-Pass Filtering; Spool Rate Extraction; Weak JEM Signal; Radar Target Recognition;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 P. Tait, Introduction to Radar Target Recognition, London, The Institution of Engineering and Technology, 2005.
2 M. R. Bell, R. A. Grubbs, "JEM modeling and measurement for radar target identification," IEEE Transactions on Aerospace and Electronic Systems, vol. 29, no. 1, pp. 73-87, Jan. 1993.   DOI
3 S. Cuomo, P. F. Pellegrini, and E. Piazza, "Model validation for 'jet engine modulation' phenomenon," Electronics Letters, vol. 30, no. 24, pp. 2073-2074, 1994.   DOI
4 H. Lim, J. H. Yoo, C. H. Kim, K. I. Kwon, and N. H. Myung, "Radar cross section measurement of a realistic jet engine structure with rotating parts," Journal of Electromagnetic Waves and Applications, vol. 25, no. 7, pp. 999-1008, 2011.   DOI
5 J. H. Park, H. Lim, and N. H. Myung, "Analysis of jet engine modulation effect with extended Hilbert-Huang transform," Electronics Letters, vol. 49, no. 3, pp. 215-216, 2013.   DOI
6 J. H. Park, W. Y. Yang, J. W. Bae, S. C. Kang, C. H. Kim, and N. H. Myung, "Extraction of jet engine modulation component weakly present in measured signals for enhanced radar target recognition," Journal of Electromagnetic Waves and Applications, vol. 28, pp. 963-975, 2014.   DOI
7 W. Y. Yang, J. H. Park, W. Y. Song, and N. H. Myung, "Robust and fast algorithm for estimating fundamental periodicity of jet engine modulation signals," IET Radar, Sonar & Navigation, vol. 10, no. 7, pp. 1286-1294, Aug. 2016.   DOI
8 박지훈, 양우용, 배준우, 강성철, 김찬홍, 명로훈, "복소 EMD를 이용한 미약한 JEM의 관측 범위에서 JEM 성분의 추출," 한국전자파학회논문지, 25(6), pp. 700-708, 2014년 6월.   DOI