volume | PIER Journals

Abstract

In this paper, the range-spread target detection in compound Gaussian clutter with reciprocal of the square root of gamma (RSRG) texture is investigated. The RSRG distribution has been proved to be a good model for texture component of extremely heterogeneous radar clutter. Taking this compound Gaussian model as a spherically invariant random process (SIRP), the Neyman-Pearson optimal detector for the range-spread target detection with known target amplitude is derived firstly. By replacing the ideal target amplitude with its maximum likelihood estimate (MLE), the generalized likelihood ratio test (GLRT) is then obtained. The statistical property of the texture component is taken into account in both of these two detectors, which makes the detectors computationally complicated. A suboptimal generalized likelihood ratio test based on order statistics (OS-GLRT) is finally proposed by substituting the texture component with its MLE. The OS-GLRT makes use of some largest observations from the range cells occupied by the most likely target scatters. The performance assessment conducted by Monte Carlo simulation validates the effectiveness of the proposed detectors.

1. Kelly, E. J., "An adaptive detection algorithm," IEEE Transactions on Aerospace and Electronic Systems, Vol. 22, No. 1, 115-127, 1986.
doi:10.1109/TAES.1986.310745

2. Robey, F. C., et al. "IEEE Transactions on Aerospace," IEEE Transactions on Aerospace and Electronic Systems, Vol. 28, No. 1, 208-216, 1992.
doi:10.1109/7.135446

3. Hansen, V. G., "Constant false alarm rate processing in search radars," Proceedings of the IEEE 1973 International Radar Conference, 325-332, 1973.

4. Zhou, W., J. T. Wang, H. W. Chen, and X. Li, "Signal model and moving target detection based on MIMO synthetic aperture radar," Progress In Electromagnetics Research, Vol. 131, 311-329, 2012.

5. Hao, C., F. Bandiera, J. Yang, D. Orlando, S. Yan, and C. Hou, "Adaptive detection of multiple point-like targets under conic constraints," Progress In Electromagnetics Research, Vol. 129, No. 250, 231, 2012.

6. Hatam, M., A. Sheikhi, and M. A. Masnadi-Shirazi, "Target detection in pulse-train MIMO radars applying ICA algorithms," Progress In Electromagnetics Research, Vol. 122, 413-435, 2012.
doi:10.2528/PIER11101206

7. Tian, B., D. Y. Zhu, and Z. D. Zhu, "A novel moving target detection approach for dual-channel SAR system," Progress In Electromagnetics Research, Vol. 115, 191-206, 2011.

8. Gao, F., A. Ru, J. Sun, and A. Hussain, "A novel SAR target detection algorithm based on contextual knowledge," Progress In Electromagnetics Research,", Vol. 142, 123 -140, 2013.

9. Mohammadpoor, M., R. S. A. Raja Abdullah, A. Ismail, and A. F. Abas, "A circular synthetic aperture radar for on-the-ground object detection," Progress In Electromagnetics Research, Vol. 122, 269-292, 2012.
doi:10.2528/PIER11082201

10. Wehner, D. R., High-resolution Radar, Artech House, Norwood, MA, 1995.

11. Hughes, P. K., "A high-resolution radar detection strategy," IEEE Transactions on Aerospace and Electronic Systems, Vol. 19, No. 5, 663-667, 1983.
doi:10.1109/TAES.1983.309368

12. Van Trees, H. L., "Detection Estimation and Modulation Theory," Wiley, 1971.

13. Gerlach, K., M. Steiner, and F. C. Lin, "Detection of a spatially distributed target in white noise," IEEE Signal Processing Letters, Vol. 4, No. 7, 198-200, 1997.
doi:10.1109/97.596885

14. Maio, A. D., A. Farina, and K. Gerlach, "Adaptive detection of range spread targets with orthogonal rejection," IEEE Transactions on Aerospace and Electronic Systems, Vol. 43, No. 2, 738-752, 2007.
doi:10.1109/TAES.2007.4285365

15. Gerlach, K. and M. J. Steiner, "Adaptive detection of range distributed targets," IEEE Transactions on Signal Processing, Vol. 47, No. 7, 1844-1851, 1999.
doi:10.1109/78.771034

16. Gerlach, K., "Spatially distributed target detection in non-Gaussian clutter ," IEEE Transactions on Aerospace and Electronic Systems, Vol. 35, No. 3, 926-934, 1999.
doi:10.1109/7.784062

17. He, Y., T. Jian, et al. "Novel range-spread target detectors in non-Gaussian clutter," IEEE Transactions on Aerospace and Electronic Systems, Vol. 46, No. 3, 1312-1328, 2010.
doi:10.1109/TAES.2010.5545191

18. Jian, T., Y. He, F. Su, et al. "Cascaded detector for range-spread target in non-Gaussian clutter," IEEE Transactions on Aerospace and Electronic Systems, Vol. 48, No. 2, 1713-1725, 2012.
doi:10.1109/TAES.2012.6178091

19. Weinberg, G. V., "Coherent multi-look radar detection for targets in Pareto distributed clutter," Defence Science and Technology Organization, 2012.

20. Weinberg, G. V., "Coherent CFAR detection in compound Gaussian clutter with inverse gamma texture," EURASIP Journal on Advances in Signal Processing, Vol. 2013, 105, 2013.
doi:10.1186/1687-6180-2013-105

21. Weinberg, G. V., "Coherent multi-look radar detection for targets in KK-distributed clutter,"," Digital Communication, 2012.

22. Weinberg, G. V., "Suboptimal coherent radar detection in a KK-distributed clutter environment," International Scholarly Research Network Signal Processing, 2012.

23. Balleri, A., A. Nehorai, and J. Wang, "Maximum likelihood estimation for compound-Gaussian clutter with inverse-gamma texture," IEEE Transactions on Aerospace and Electronic Systems, Vol. 43, No. 2, 775-780, 2007.
doi:10.1109/TAES.2007.4285370

24. Weinberg, G. V., "Assessing the Pareto fit to high resolution high grazing angle sea clutter ," Electronics Letters, Vol. 47, No. 8, 516-517, 2011.
doi:10.1049/el.2011.0518

25. Frery, A. C., H. J. Muller, C. F. Yanasse, et al. "A model for extremely heterogeneous clutter," IEEE Transactions on Geoscience and Remote Sensing, Vol. 35, No. 3, 648-659, 1997.
doi:10.1109/36.581981

26. Moser, G., J. Zerubia, and S. B. Serpico, "Dictionary-based stochastic expectation-maximization for SAR amplitude probability density function estimation," IEEE Transactions on Geoscience and Remote Sensing, Vol. 44, No. 1, 188-200, 2006.
doi:10.1109/TGRS.2005.859349

27. Moser, G., J. Zerubia, and S. B. Serpico, "SAR amplitude probability density function estimation based on a generalized Gaussian model," IEEE Transactions on Image Processing, Vol. 15, No. 6, 1429-1442, 2006.
doi:10.1109/TIP.2006.871124

28. Xu, Z., "Modeling of sea clutter and target detection in sea clutter," Graduate School of National University of Defense Technology, 2012.

29. Nitzberg, R., "Effect of a few dominant specular reflectors target model upon target detection ," IEEE Transactions on Aerospace and Electronic Systems, Vol. 14, No. 4, 670-673, 1978.
doi:10.1109/TAES.1978.308696

30. Gini, F. and M. Greco, "Covariance matrix estimation for CFAR detection in correlated heavy tailed clutter," Signal Processing, Vol. 82, 1495-1507, 2002.

Dr. Yanzhao Gao

Dr. Ronghui Zhan

Dr. Jianwei Wan