一种改进的高分辨极化目标检测算法
An improved method for high-resolution polarization target detection
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摘要: 针对宽带高分辨雷达体制,研究了杂波环境中的目标检测问题,引用了极化域线性积累滤波的思路以提高雷达接收信号的信杂比,在此基础上利用波形固有的径向高分辨力对目标进行一维距离成像,结合目标所占据的分辨单元区间内的幅值及其极化状态相对于杂波所对应的分辨单元内的幅值及其极化状态有着较大的差异这一客观事实,提出了基于 Stokes矢量 Frobenius范数非参数检测方法,实验仿真结果表明该方法能够有效改善雷达的检测性能。
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关键词:
- 高分辨; 极化; 目标检测
Abstract: The problem of detecting targets in the cluttered circumstance with wide-band high-resolution radar is studied. A way of improving SCR(Signal-to-Clutter-Ratio) is cited by linear integration filtering in polarization domain. With the intrinsic high resolution of wide-band waveform, one-dimension range profile of radar target can be obtained. In connection with the fact that the values of Stokes vector and polarization attitude of target greatly differ from which of cluttered circumstance, a new target detection method is presented. Simulation experimental results show that radars detection performance can be improved significantly by using the algorithm presented in this paper. -
庄钊文,肖顺平,王雪松,雷达极化信息处理及应用,北京,国防工业出版社,1999,10 13,291-359[2]王雪松,宽带极化信息处理的研究,[博士学位论文],长沙,国防科技大学,1999[3]李永祯,王雪松,肖顺平,等,一种新的高分辨极化目标检测方法,国防科技大学学报,2000,22(6),65-69[4]李永祯,王雪松,肖顺平,庄钊文,基于非线性积累的高分辨极化目标检测,红外与毫米波学报,2000,19(4)307-312[5]李永祯,王雪松,肖顺平,等,基于强散射点径向积累的高分辨极化目标检测方法,电子学报,2000,29(3)307-310[6]N. C. Currie, R. D. Hayes, R. N. Trebits, Millimeter-wave Radar Clutter, Boston, London, Artech House, 1992, Chap2-3.[7]R. Barakat, Statistics of the stokes parameter, J. of the Optical Society of America, 1987, A-4(7).1-28. 121-156.[8]黄德双,韩月秋,基于位置相关的高分辨雷达目标检测方法,电子科学学刊,1997,19(5),584-590. -
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