论文标题
针对多和雷达系统的随机天线子集选择保障方法
A Random Antenna Subset Selection Jamming Method against Multistatic Radar System
论文作者
论文摘要
多重雷达系统（MSRS）被认为是抑制大主障碍的有效方案，因为它具有较高的空间分辨率，从而可以从空间域取消干扰。为了开发针对MSR的电子对策，本文提出了一种随机阵列子集选择（RASS）干扰方法。在拉斯干扰器中，阵列天线的元素被随机激活，从而导致稳定的主挡杆和随机的侧球，这与传统的干扰器不同，该干扰器施加了完整的天线阵列，这些天线阵列享有恒定的大主体行李箱和侧球。我们研究了雷达收到的干扰信号的协方差矩阵，并得出其等级，表明协方差矩阵是完全排名的。我们还计算了在提议的干扰方法下使用基于子空间的抑制方法的基于子空间的抑制方法之后的输出干扰（JSNR），该方法表明，完整的等级属性使这种抑制方法无效。数值结果验证了我们的分析扣除额，并表现出与传统方法相比，我们提出的Rass干扰方法的对策性能得到了改善。
Multistatic radar system (MSRS) is considered an effective scheme to suppress mainlobe jamming, since it has higher spatial resolution enabling jamming cancellation from spatial domain. To develop electronic countermeasures against MSRS, a random array subset selection (RASS)jamming method is proposed in this paper. In the RASS jammer, elements of the array antenna are activated randomly, leading to stable mainlobe and random sidelobes, different from the traditional jammer that applies the complete antenna array enjoying constant mainlobe and sidelobes. We study the covariance matrix of jamming signals received by radars, and derive its rank, revealing that the covariance matrix is of full rank. We also calculate the output jamming to signal and noise ratio (JSNR) after the subspace-based jamming suppression methods used in MSRS under the proposed jamming method, which demonstrates that the full rank property invalidates such suppression methods. Numerical results verify our analytical deduction and exhibit the improved countermeasure performance of our proposed RASS jamming method compared to the traditional one.
