摘要
根据普通对SAR的弹射式干扰的不足,提出了一种改进的弹射式干扰。改进的弹射式干扰将干扰机转发时延设置成随机变量,这样干扰信号在方位上就不再是线性调频信号,干扰信号在方位压缩处理过程中就不会被压缩。改进的弹射式干扰将覆盖整个成像区域,而普通的弹射式干扰只能覆盖部分区域,因此改进的弹射式干扰具有明显的优越性。通过计算机仿真得到了干扰效果图,得到的干扰图像类似噪声干扰,很好地验证了理论的正确性。最后具体分析了改进的干扰方式的优越性。
An improved rebound jamming way named Random Delay Rebound Jamming (RDRJ) to SAR (Synthetic Aperture Radar) is investigated. Not like the normal rebound jamming, the jammer's delay time is set randomly between every pulse. The disturbing signal is Linearly Frequency Modulated (LFM) in range direction and not in azimuth direction. The analyses and computer simulation show that the RDRJ method provides a good way to jamming SAR. The advantage of the RDRJ is analyzed finally.
出处
《电子与信息学报》
EI
CSCD
北大核心
2005年第2期256-258,共3页
Journal of Electronics & Information Technology
关键词
SAR
干扰
RD算法
Synthetic aperture radar, jamming, RD algorithm
