doi:

DOI: 10.3724/SP.J.1146.2006.01125

Journal of Electronics & Information Technology (电子与信息学报) 2008/30:2 PP.314-317

SAR Image Target Detection Based on ODVI


Abstract:
A new CFAR method for SAR image target detection based on ODVI-AC is proposed in this paper. The reference cells of the test cell are firstly processed by an automatic censoring algorithm in order to remove the cells of clutter and interfering targets in the reference window. The remaining cells which are homogeneous can be used to describe the statistical property of the local environments and to evaluate the parameters of the probability density function. The remaining cells can also used to yield the test statistics of two-parameter CFAR detector and calculate the adaptive CFAR threshold. The performance of ODVI-AC CFAR detector is analyzed theoretically to show its superiority. Finally, the field X band SAR image data is used as test data for this algorithm, and the comparison with other CFAR methods is favorable to the ODVI-AC CFAR in this paper.

Key words:SAR,Target detection,Ordered Data Variability Index (ODVI),Automatic censoring,CFAR

ReleaseDate:2014-07-21 15:34:50



[1] Oliver C and Quegan S. Understanding Synthetic Aperture Radar Images. Boston, London, Artech House, 1998: 277-296.

[2] Himonas S D and Barkat M. Automatic censored CFAR detection for nonhomogeneous environments. IEEE Trans. on Aerospace and Electronic Systems, 1992, 28(1): 286-304.

[3] Smith M E and Varshney P K. Intelligent CFAR processor based on data variability. IEEE Trans. on Aerospace and Electronic Systems, 2000, 36(3): 837-847.

[4] Farrouki A and Barkat M. Automatic censoring CFAR detector based on ordered data variability for nonhomogeneous environments. IEE Proceedings of Radar, Sonar and Navigation, 2005, 152(1): 43-51.

[5] Hou Xiu-Ying, Morinaga N, and Namekawa T. Direct evaluation of radar detection probabilities. IEEE Trans. on Aerospace and Electronic Systems, 1987, 23(4): 418-423.

[6] Novak L M, Halversen S D and Owirka G J, et al.. Effects of polarization and resolution on SAR ATR. IEEE Trans. on Aerospace and Electronic Systems, 1997, 33(1): 102-116.

[7] Rohling H. Radar CFAR thresholding in clutter and multiple target situations. IEEE Trans. on Aerospace and Electronic Systems, 1983, 19(4): 608-621.

PDF