volume | PIER Journals

Abstract

Joint time-frequency analysis (JTFA) is applied to micro Doppler signatures generated by jet engine modulation (JEM) effect using a modified Hilbert-Huang transform (HHT). The modified HHT is developed to improve the JTFA results of measured JEM signals. Wavelet decomposition (WD) with Meyer wavelet function is considered as a supplementary process of the HHT. The modified HHT examines a signature obtained from simulation of a jet engine CAD model, and is then applied to the signatures obtained from measurement of two realistic jet engine models. The modified HHT gives more improved JTFA results of the measured JEM signals than those from the simple short-time Fourier transform - (STFT) based analysis. The modified HHT-based JTFA approach is expected to be significantly useful for enabling high-quality radar target recognition in a real environment by complementing other traditional analyses.

1. Bell, M. R. and R. A. Grubbs, "JEM modeling and measurement for radar target identification," IEEE Trans. Aerospace and Electronic Systems, Vol. 29, No. 1, 73-87, 1993.
doi:10.1109/7.249114 Google Scholar

2. Lim, H. and N.-H. Myung, "A novel hybrid AIPO-MoM technique for jet engine modulation analysis," Progress In Electromagnetics Research, Vol. 104, 85-97, 2010.
doi:10.2528/PIER10033103 Google Scholar

3. Park, J. H., J. H. Yoo, C. H. Kim, K. I. Kwon, and N. H. Myung, "Joint time-frequency analysis of radar micro-Doppler signatures from aircraft engine models," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 8-9, 1069-1080, 2011. Google Scholar

4. Chen, V. C. and H. Ling, "Time-Frequency Transforms for Radar Imaging and Signal Analysis," Chapter 8, Artech House, Norwood, MA, 2002. Google Scholar

5. Han, S.-K., H.-T. Kim, S.-H. Park, and K.-T. Kim, "Efficient radar target recognition using a combination of range profile and time-frequency analysis," Progress In Electromagnetics Research, Vol. 108, 131-140, 2010.
doi:10.2528/PIER10071601 Google Scholar

6. Guo, K. Y., Q. Li, and X. Q. Sheng, "A precise recognition method of missile warhead and decoy in multi-target scene," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 5-6, 641-652, 2010.
doi:10.1163/156939310791036250 Google Scholar

7. Lim, H., 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, 999-1008, 2011.
doi:10.1163/156939311795253993 Google Scholar

8. Huang, N. E., Z. Shen, S. R. Long, M. C. Wu, H. H. Shih, Q. Zheng, N. C. Yen, C. C. Tung, and H. H. Liu, "The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis," Proc. R. Soc. A, Vol. 454, No. 1971, 679-699, 1998.
doi:10.1098/rspa.1998.0193 Google Scholar

9. Liu, Z., L. Liu, and B. Barrowes, "The application of the Hilbert-Huang transform in through-wall life detection with UWB impulse radar," PIERS Online, Vol. 6, No. 7, 695-699, 2010.
doi:10.2529/PIERS100217122115 Google Scholar

10. Yan, R. and R. X. Gao, "Hilbert-Huang transform-based vibration signal analysis for machine health monitoring," IEEE Trans. Instrumentation and Measurement, Vol. 55, No. 6, 1327-1334, 2006. Google Scholar

11. Cai, C., W. Liu, J. S. Fu, and Y. Lu, "Radar micro-Doppler signature analysis with HHT," IEEE Trans. Aerospace and Electronic Systems, Vol. 46, No. 2, 929-938, 2010.
doi:10.1109/TAES.2010.5461668 Google Scholar

12. Narayanan, R. M., M. C. Shastry, P.-H. Chen, and M. Levi, "Through-the-wall detection of stationary human targets using Doppler radar ," Progress In Electromagnetics Research B, Vol. 20, 147-166, 2010.
doi:10.2528/PIERB10022206 Google Scholar

13. Yang, W., "Interpretation of mechanical signals using an improved Hilbert-Huang transform," Mechanical System and Signal Processing, Vol. 22, 1061-1071, 2008.
doi:10.1016/j.ymssp.2007.11.024 Google Scholar

14. Peng, Z., P. Tse, and F. Chu, "An improved Hilbert-Huang transform and its application in vibration signal analysis," Journal of Sound and Vibration, No. 286, 187-205, 2005.
doi:10.1016/j.jsv.2004.10.005 Google Scholar

15. Gao, P. C., Y. B. Tao, and H. Lin, "Fast RCS prediction using multiresolution shooting and bouncing ray method on the GPU," Progress In Electromagnetics Research, Vol. 107, 187-202, 2010.
doi:10.2528/PIER10061807 Google Scholar

16. Buddendick, H. and T. F. Eibert, "Bistatic image formation from shooting and bouncing rays simulated current distributions," Progress In Electromagnetics Research, Vol. 119, 1-18, 2011.
doi:10.2528/PIER11060212 Google Scholar

17. Chen, G. P. and Z. Q. Zhao, "Ultrasound tomography-guide TRM technique for breast tumor detecting in MITAT system," Journal of Electromagnetic Waves and Applications, Vol. 24, No. 11-12, 1459-1471, 2010.
doi:10.1163/156939310792149650 Google Scholar

18. Ramesh, R., M. Madheswara, and K. Kannan, "Numerical simulation of nanoscale FinFET photodetector for optimal detection of biological signals using interpolating wavelets," Progress In Electromagnetics Research B, Vol. 31, 239-260, 2011. Google Scholar

19. Hatamzadeh-Varmazyar, S., M. Naser-Moghadasi, E. Babolian, and Z. Masouri, "Calculating the radar cross section of the resistive targets using the Haar wavelets," Progress In Electromagnetics Research, Vol. 86, 55-80, 2008.
doi:10.2528/PIER08042504 Google Scholar

20. Zhang, M., Y. W. Zhao, H. Chen, and W.-Q. Jiang, "SAR imaging simulation for composite model of ship on dynamic ocean scene," Progress In Electromagnetics Research, Vol. 113, 395-412, 2011.
doi:10.2528/PIER11071501 Google Scholar

Dr. Ji-Hoon Park

Dr. Ho Lim

Dr. Noh-Hoon Myung