ID 原文 译文
8654 反向交叉眼干扰是近年来受到广泛关注的一种单脉冲角度欺骗干扰技术,为丰富反向交叉眼干扰理论,对多干扰机场景下的反向交叉眼干扰技术进行了分析。 Reverse crossed eyes interference is attracted much attention in recent years of a single pulse Angle deception jamming technology, for the reverse crossed eyes interference theory, the more interference under the airport scene of reverse crossed eyes interference technology are analyzed.
8655 在分析过程中,通过严格地推导,研究了反向交叉眼干扰性能与反向交叉眼增益的关系; In the process of analysis, through the derivation strictly, to study the reverse crossed eyes interference performance and crossed eyes gain;
8656 在此基础上,研究了多干扰机协同干扰时,干扰机对间存在的相对幅相差以及目标回波对反向交叉眼增益的影响,进而分析了上述干扰因素对反向交叉眼干扰性能的影响。 On this basis, study the jammer more collaborative interference, of relative amplitude difference between jammer and the influence of target echo the backward crossed eyes gain, and then analyzed the interference factors affect the performance of reverse crossed eyes interference.
8657 仿真结果表明,干扰机对间的相对幅相差变小、目标回波相对干扰信号的相对幅度变小时,反向交叉眼增益增强,反向交叉眼干扰效果增强。 Simulation results show that the relative amplitude difference between jammer to smaller relative interference, target echo signal of relative amplitude variable hours, reverse crossed eyes gain enhancement, reverse crossed eyes interference effect is enhanced.
8658 高频地波超视距雷达在一个相参积累时间内只能获得空域的单次快拍,在单次快拍条件下进行波达方向估计常常性能很差。 Hf ground wave over-the-horizon radar in a coherent accumulation time can only obtain the airspace single snapshot, under the condition of single snapshot for doa estimation is often poor performance.
8659 针对该问题,本文以压缩感知理论为基础,并根据目标信号在探测方位分布的稀疏性,提出单次快拍下目标方位估计方法。 Aiming at this problem, this article is based on compressed sensing theory, and according to the target signal in detecting sparse sexual orientation distribution, put forward the target bearing estimation method under a single snapshot.
8660 该方法首先利用稀疏变换字典将位于连续方位空间的目标信号变换到满足稀疏条件的离散网格点上; This method firstly using sparse transform the dictionary will be in continuous bearing space target signal transformation to meet the condition of sparse discrete grid point;
8661 然后采用正交匹配追踪方法获得粗略的方位信息; Then orthogonal matching pursuit method for rough location information;
8662 最后根据迭代最小二乘连续匹配追踪算法得到目标的精确方位。 According to the iterative least squares matching pursuit (continuous accurate orientation of target is obtained.
8663 理论分析与仿真证明,该方法可以提高在单次快拍下对低信噪比相干信号的方位估计精度,并且完全适用于阵元数较少的小规模高频地波雷达系统。 Theoretical analysis and simulation prove that the method can improve under a single snapshot coherent signal in low SNR of the azimuth estimation precision, small number of arrays and completely suitable for small-scale high frequency ground wave radar system.