volume | PIER Journals

Abstract

An iterative Time-Reversal Mirror (TRM) method is proposed to Detect and Image the buried target beneath ground surface. Unlike the conventional TRM methods which treat the information of the ground as clutters and directly delete them, the iterative TRM imaging method proposed in this paper utilizes the information of rough ground surface as a useful knowledge. The new approach is consisted of two TRM procedures. In the first TRM procedure, it aims to image the rough surface where the propagation environment for electromagnetic wave is free space. The second TRM procedure aims to image the buried target. In this step, the information of the rough surface estimated by the first TRM procedure will be treated as newly updated propagation environment. Then conventional TRM is applied to image the buried target. By applying this iterative TRM method, the information of the rough ground can be well considered in the whole TRM procedure. Numerical simulations prove that this method performs significantly better image contrast comparing with the results obtained by using conventional TRM. 4-5 dB improvement on the imaging SNR has been achieved. Furthermore, the target can be located more accurately.

1. Pettinelli, E., A. Di Matteo, E. Mattei, L. Crocco, F. Soldovieri, J. D. Redman, and A. P. Annan, "GPR response from buried pipes: Measurement on field site and tomographic reconstructions," IEEE Trans. Geosci. Remote Sens., Vol. 47, No. 8, 2639-2645, 2009.
doi:10.1109/TGRS.2009.2018301 Google Scholar

2. Borgioli, G., L. Capineri, P. L. Falorni, S. Matucci, and C. G. Windsor, "The detection of buried pipes from time-of-flight radar data," IEEE Trans. Geosci. Remote Sens., Vol. 46, No. 8, 2254-2266, 2008.
doi:10.1109/TGRS.2008.917211 Google Scholar

3. Daniels, D., "A review of GPR for landmine detection," Sens. Imaging: Int. J., Vol. 7, No. 3, 90-123, 2006.
doi:10.1007/s11220-006-0024-5 Google Scholar

4. Das, Y., "Effects of soil electromagnetic properties on metal detectors," IEEE Trans. Geosci. Remote Sens., Vol. 44, No. 6, 1444-1453, 2006.
doi:10.1109/TGRS.2006.870401 Google Scholar

5. Dogaru, T., L. Collins, and L. Carin, "Optimal time-domain detection of a deterministic target buried under a randomly rough interface ," IEEE Trans. Antennas Propagat., Vol. 49, 313-326, 2001.
doi:10.1109/8.918604 Google Scholar

6. Van der Merwe, A. and I. J. Gupta, "A novel signal processing technique for clutter reduction in GPR measurements of small, shallow land mines ," IEEE Trans. Geosci. Remote Sens., Vol. 38, 2627-2637, 2000.
doi:10.1109/36.885209 Google Scholar

7. Runkle, P. R., P. K. Bharadwaj, L. Couchman, and L. Carin, "Hidden markov models for multi-aspects target classification," IEEE Trans. Signal Processing, Vol. 47, 2035-2040, 1999.
doi:10.1109/78.771050 Google Scholar

8. Sullivan, A., R. Damarla, N. Geng, Y. Dong, and L. Carin, "Ultrawide-band synthetic aperture radar for detection of unexploded ordnance: Modeling and measurements," IEEE Trans. Antennas Propagat., Vol. 48, 1306-1315, 2000.
doi:10.1109/8.898763 Google Scholar

9. Dong, Y., P. R. Runkle, L. Carin, R. Damarla, A. Sullivan, M. A. Ressler, and J. Sichina, "Multi-aspect detection of surface and shallow-buried unexploded ordnance via ultra-wideband synthetic aperture radar ," IEEE Trans. Geosci. Remote Sens., Vol. 39, 1259-1269, 2001.
doi:10.1109/36.927448 Google Scholar

10. Cui, G., L. Kong, and J. Yang, "A back-projection algorithm to stepped-frequency synthetic aperture through-the-wall radar imaging," Process of 1st Asian and Pacific Conference on Synthetic Aperture Radar, 123-126, 2007. Google Scholar

11. Bal, G. and L. Ryzhik, "Time reversal and refocusing in random media," SIAM Journal on Applied Mathematics, Vol. 63, 1475-1498, 2003.
doi:10.1137/S0036139902401082 Google Scholar

12. Zheng, W., Z. Zhao, and Z.-P. Nie, "Application of TRM in the UWB through wall radar," Progress In Electromagnetics Research, Vol. 87, 279-296, 2008.
doi:10.2528/PIER08101202 Google Scholar

13. Zheng, W.-J., Z.-Q. Zhao, Z.-P. Nie, and Q.-H. Liu, "Evaluation of TRM in the complex through wall environment," Progress In Electromagnetics Research, Vol. 90, 235-254, 2009.
doi:10.2528/PIER09011003 Google Scholar

14. Fink, M. and Time reversed acoustics, "Physics Today,", Vol. 50, 34-40, 1997. Google Scholar

15. Bellomo, L., S. Pioch, M. Saillard, and E. Spano, "Time reversal experiments in the microwave range: Description of the radar and results," Progress In Electromagnetics Research, Vol. 104, 427-448, 2010.
doi:10.2528/PIER10030102 Google Scholar

16. Tortel, H., G. Micolau, and M. Saillard, "Decomposition of the time reversal operator for electromagnetic scattering," Journal of Electromagnetic Waves and Applications, Vol. 13, No. 15, 687-719. Google Scholar

17. Chen, X., "Time-reversal operator for a small sphere in electromagnetic fields," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 9, 1219-1230, 2007. Google Scholar

18. Liu, D., J. Krolik, and L. Carin, "Electromagnetic target detection in uncertain media: Time-reversal and minimum-variance algorithms," IEEE Trans. Geosci. Remote Sens., Vol. 45, 934-944, 2007.
doi:10.1109/TGRS.2006.890411 Google Scholar

19. De Rosny, J., G. Lerosey, and M. Fink, "Theory of electromagnetic time-reversal mirrors," IEEE Trans. Antennas Propagat., Vol. 58, 3139-3149, 2010.
doi:10.1109/TAP.2010.2052567 Google Scholar

20. Liu, X., B.-Z. Wang, S. Xiao, and J. H. Deng, "Performance of impulse radio UWB communications based on time reversal technique ," Progress In Electromagnetics Research, Vol. 79, 401-413, 2008.
doi:10.2528/PIER07102205 Google Scholar

21. Zhang, W., A. Hoorfar, and L. Li, "Through-the-wall target localization with time reversal music method,", Vol. 106, 75-89, 2010.
doi:10.2528/PIER10052408 Google Scholar

22. Foroozan, F. and A. Asif, "Time-reversal ground-penetrating radar: Range estimation with cramér-rao lower bounds," IEEE Trans. Geosci. Remote Sens., Vol. 48, 3698-3708, 2010.
doi:10.1109/TGRS.2010.2047726 Google Scholar

23. Bourgeois, J. M. and G. S. Smith, "A fully three-dimensional simulationof a ground-penetrating radar: FDTD theory comparedwith experiment ," IEEE Trans. Geosci. Remote Sens., Vol. 34, No. 1, 36-44, Jan. 1996.
doi:10.1109/36.481890 Google Scholar

24. Bobrov, P. P., V. L. Mironov, O. V. Kondratieva, A. V. Repin, and , "Frequency dependence of permittivity of free and bound water in soils for different textures," PIERS Online, Vol. 5, No. 5, 426-430, 2009.
doi:10.2529/PIERS090219110307 Google Scholar

25. Tsang, L., C. H. Chan, K. Pak, and H. Sangani, "Monte Carlo simulations of large-scale problems of random rough surface scattering and applications to grazing incidence with the BMIA/canonical grid method," IEEE Trans. Antennas Propagat., Vol. 43, 851-859, 1995.
doi:10.1109/8.402205 Google Scholar

26. Zhao, Z., N. Li, J. Smith, et al. "Analysis of scattering from very large three-dimensional rough surface using MLFMM and ray-based analyses," IEEE Antennas and Propagation Magazine, Vol. 47, 20-30, 2005.
doi:10.1109/MAP.2005.1532538 Google Scholar

27. Cousty, J., G. Bertrand, L. Najman, and M. Couprie, "Watershed cuts: Thinnings, shortest path forests, and topological watersheds," IEEE Trans. Patten Analysis and Machine Intelligence, Vol. 32, No. 5, 925-939, 2010.
doi:10.1109/TPAMI.2009.71 Google Scholar

Dr. Xiaozhang Zhu

Professor Zhiqin Zhao

Dr. Wei Yang

Dr. Yin Zhang

Professor Zai-Ping Nie

Prof. Qing Huo Liu