摘要
压制干扰效果的科学估算一直是SAR对抗评估中的难点,特别是随斜距离增加,干扰功率由强趋弱,形成压制强度的过渡带,给评估指标计算带来了不便。针对此问题,提出了一种基于滑窗检测的压制干扰有效区域和距离估算的新方法。首先,给出了基于检测性能的压制干扰有效区域和有效距离的定义,并分析了压制干扰下SAR图像检测的点目标模型和空洞模型对于上述指标的计算性能。然后,讨论了干扰后图像中滑动检测窗的构造方法,推导并证明了了相应的检测性能及其评估优势。仿真实例表明了方法的客观性、有效性和稳健性。
A new method for calculation and assessment of noise jamming effect against SAR based on the moving windows detection capability is studied. Firstly, the definition of effectively jammed area and corresponding distance are given before the point and the hole model detection capability being analyzed. Secondly, the character detection model by moving a rectangular window in the complex SAR image after jamming is constructed, and its advantage for detection and assessment is then deduced. Experiments show the effectiveness of this method.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2008年第11期2123-2127,共5页
Systems Engineering and Electronics
关键词
合成孔径雷达
压制干扰
检测效能
评估
synthetic aperture radar
noise jamming
detection capability
assessment
