一种简单的相干雷达极化恒虚警检测算法
A Simple Polarimetric CFAR Detector for Coherent Radar
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摘要: 该文提出了高斯杂波背景下一种结构简单的相干雷达极化恒虚警检测算法。利用雷达回波的极化信息来提高检测性能,推导出了虚警概率表达式。研究结果表明,该相干雷达极化恒虚警检测算法相对于杂波协方差矩阵有恒虚警的性质。该检测算法比极化广义似然比检测算法计算量小,易于工程实现,适合于强信杂比和目标信号导向矢量未知的情况。同时仿真分析了不同极化状态时的检测性能。
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关键词:
- 相干雷达; 极化; 恒虚警
Abstract: A simple polarimetric CFAR detector for coherent radar against a Gaussian background is presented. The expression of PFA for the detector is derived. It is shown that the proposed detector has the constant false alarm properties with respect to the covariance matrix of the clutter. With respect to the polarimetric generalized likelihood ratio test detector, the proposed one has less complexity. It is appropriate to high SCR and unknown steering, vector case. The performance in different polarimetric cases is analyzed. -
Giuli D. Polarization diversity in radars[J].Proc. IEEE.1986, 74(2):245-[2]Kelly E J. A adaptive detection algorithm. IEEE Trans. on AES,1986, 22(1): 115- 127.[3]Park H, Li J, Wang H. Polarization-space-time domain generalized likelihood ratio detection of radar targets[J].Signal Processing.1995,41(2):153-[4]Pastina D, Lombardo P, Bucciarelli T. Adaptive polarimetric target detection with coherent radar. IEEE Trans. on AES, 2001,37(4): 1194- 1219.[5]Zhang Q T. A CFAR processor for the detection of unknown random signals in nonstationary correlated noise[J].Signal Processing.1996, 48(1):17-26[6]Park H, Kwang Y, Wang H. An efficient adaptive polarimetric processor with embedded CFAR. EPRI Journal, 2003, 25(3): 171-178.[7]Novak L M, Burl M C. Optimal speckle reduction in polarimetric SAR imagery. IEEE Trans. on AES, 1990, 26(2): 293 - 305.[8]Goodman N R. Statistical analysis based on a certain multivariate complex distribution[J].Annals of Mathematical Statistics.1963,34(1):152-[9]Muirhead R J. Aspect of multivariate statistical theory [M]. New York: John Wiley Sons, INC, 1982:88 - 92. -
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