摘要
相对于平飞运动雷达,俯冲运动垂直向下的运动分量会引入额外的多普勒频率,对杂波的空时分布特性产生重要影响。本文针对弹载俯冲非正侧阵雷达,提出了一种俯冲运动空时信号模型,首先推导了多普勒频率与空间角度的耦合关系的一般表达式,并详细分析了在实际的阵面几何配置情况下,俯冲运动雷达杂波的空时分布特性,相应提出了适于俯冲运动的基于参数模型和配准补偿(parameter model and registration compensation,PM-RC)的杂波抑制方法。最后通过弹载雷达建模仿真分析了俯冲运动对杂波空时特性的具体影响,并验证了杂波抑制方法的有效性。
Compared with the radar receiver mounting on a horizontal flying platform, the vertical velocity component of a diving radar will cause an additional frequency which has an obvious effect upon the spatial-temporal distribution of clutter. Focusing on the non-broadside missile-borne diving radar, this paper proposes a space-time diving maneuver model and derives a general relationship between Doppler frequency and space angle. Then the spatial-temporal distribution of clutter is studied according to different antenna geometries in practice. Thus a clutter mitigation approach based on parametric model and registration compensation （PM-RC） is proposed. A missile-borne radar model is established to demonstrate the analysis of clutter characteristics and the effectiveness of the clutter suppression method in this paper.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2013年第8期1631-1637,共7页
Systems Engineering and Electronics
基金
国家重点基础研究发展计划(973计划)(2010CB731903)
国家自然科学基金(61101249
61271292)
航空科学基金(2012181004)资助课题
关键词
非正侧阵雷达
杂波空时特性
参数模型和配准补偿
弹载俯冲模型
non-broadside array radar
clutter spatial and temporal characteristic
parameter model andregistration compensation （PM-RC）
missile-borne diving model
