摘要
针对宽带毫米波高分辨雷达体制 ,研究了杂波环境中的目标检测问题。提出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 ,在此基础上利用宽带波形固有的径向高分辨力对目标进行一维距离成像 ,估计出回波中强散射点的数量和分布 ,通过对不同径向分辨单元内的强散射点进行整体检测 ,可进一步有效地提高信杂比 ,改善雷达的检测性能。
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 presented by linear integration filtering in polarization domain. With the intrinsic high resolution characteristic of wide band waveform, one dimension range profile of radar target can be obtained. The number and distribution of intense scatterers in radar returns can be estimated. A polarization target detection method is presented based on the correlation of these intense scatterers in various resolution cells. SCR can be improved efficiently and so can the detection performance of radar. The experiment results show that this method is a very effective detection strategy for extended targets.
出处
《国防科技大学学报》
EI
CAS
CSCD
2000年第6期65-69,共5页
Journal of National University of Defense Technology
基金
国家自然科学基金资助项目! (6 990 2 0 10 )
