一种宽带数字相控阵天线比幅曲线的设计方法

随着宽带数字化技术的发展,如何利用宽带DBF 技术在电子对抗领域中进行精确测角测向一直是研 究的热点。文中论述了一种宽带数字相控阵天线比幅曲线的优化设计方法,从多波束类型的选择出发,分析了和和 交叠电平的选择、空域覆盖和增益覆盖的取舍等问题,并且通过对雷达探测领域和差比幅曲线绘制方法的演化,得 到宽带数字和和比幅曲线的绘制方法,分析了基于正弦空间的多波束比幅曲线、中心频点的频率转移、侦察频点的 频率转移等问题,最终仅用一条标准比幅曲线进行装订即可解决宽带带宽内和扫描空域内的所有和和比幅测角问 题,该设计方法拟制的宽带多波束比幅曲线,可应用于宽带数字相控阵体制的雷达探测或电子对抗领域,在简化比 幅曲线数量、减少比幅曲线存储空间、提升比幅测角测向精度等方面均有明显的优势。

A Design Method for Amplitude Comparison Curves of Broadband Digital Phased Array Antenna

With the development of broadband digital technology, how to use broadband DBF technology for precise angle and direction measurement in the field of electronic countermeasures has always been a research hotspot. The article discusses an optimization design method for the amplitude comparison curve of broadband digital phased array antennas. Starting from the selection of multi beam types, the selection of sum and difference levels, the selection of spatial coverage and benefit coverage, and other issues are analyzed. Through the evolution of the drawing method for radar detection sum and difference amplitude curves, the drawing method for broadband digitization sum and sum curves is obtained. The multi beam amplitude comparison curves based on sine space are analyzed, respectively the frequency transfer of the central frequency point, and the frequency transfer of the middle frequency point can be solved by binding only one standard amplitude comparison curve to solve all amplitude comparison and angle measurement problems within the broadband bandwidth and scanning airspace. The broadband multi beam amplitude comparison curve generated by this design method can be applied to the radar detection or electronic countermeasures fields of broadband digital phased array systems. It has obvious advantages in simplifying the number of amplitude comparison curves, reducing the storage space of amplitude comparison curves, and improving the accuracy of amplitude comparison angle and direction measurement.