State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471000, China.
Sensors (Basel). 2023 Feb 22;23(5):2449. doi: 10.3390/s23052449.
Due to the modulation of tiny frequency offset on the array elements, a frequency diverse array (FDA) jammer can generate multiple range-dimension point false targets, and many deception jamming methods against SAR using an FDA jammer have been studied. However, the potential of the FDA jammer to generate barrage jamming has rarely been reported. In this paper, a barrage jamming method against SAR using an FDA jammer is proposed. To achieve two-dimensional (2-D) barrage effect, the stepped frequency offset of FDA is introduced to generate range-dimensional barrage patches, and the micro-motion modulation is employed to increase the extent of barrage patches along the azimuth direction. Mathematical derivations and simulation results demonstrate the validity of the proposed method in generating flexible and controllable barrage jamming.
由于对阵列单元上的微小频率偏移进行调制，频率分集阵列（FDA）干扰机可以产生多个距离-方位维点虚假目标，并且已经研究了许多针对 SAR 使用 FDA 干扰机的欺骗干扰方法。然而，FDA 干扰机产生弹幕干扰的潜力很少有报道。在本文中，提出了一种针对 SAR 的 FDA 干扰机弹幕干扰方法。为了实现二维（2-D）弹幕效果，引入了 FDA 的阶跃频率偏移以产生距离-方位维弹幕块，并且采用微动调制来增加沿方位方向的弹幕块的程度。数学推导和仿真结果证明了该方法在产生灵活可控的弹幕干扰方面的有效性。
