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Active radar cross section (RCS) reduction in parallel-fed dipole phased array

机译:并联馈电偶极相控阵中的主动雷达横截面(RCS)减小

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摘要

The radar cross section (RCS) of an aerospace platform represents its electromagnetic scattering properties. Design and development of phased arrays with reduced RCS, suitable for low observable platforms is a critical issue in defense sector. When such low RCS phased array are mounted on a platform contributes significantly in RCS control. Especially for phased array in radiation mode, RCS reduction may be achieved by using efficient adaptive algorithm. In this paper, the RCS of dipole phased array with parallel feed network is shown to be reduced towards hostile probing sources using modified improved LMS algorithm. The algorithm performance depends on the array design parameters, type of feed network and the signal environment considered. The scattering within phased array system due to impedance mismatch at different component levels are taken into account. It is shown that the parameters such as characteristic impedance, load impedance, number, direction-of-arrival and power level of probing sources controls the extent of RCS reduction towards probing sources.
机译:航空航天平台的雷达截面(RCS)表示其电磁散射特性。具有降低的RCS的相控阵的设计和开发,适用于低可观测平台,是国防领域的关键问题。当将这种低RCS相控阵列安装在平台上时,将大大有助于RCS控制。特别是对于辐射模式下的相控阵,可以通过使用高效的自适应算法来实现RCS的降低。在本文中,采用改进的改进的LMS算法,表明具有并行馈电网络的偶极相控阵的RCS可以降低为敌对探测源。算法性能取决于阵列设计参数,馈电网络类型和所考虑的信号环境。考虑了在不同组件水平上由于阻抗失配而引起的相控阵系统内的散射。结果表明,探测源的特征阻抗,负载阻抗,数量,到达方向和功率水平等参数控制着RCS朝探测源减小的程度。

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