相位锥化低旁瓣和差波束方向图合成新方法  

New Method for Sum and Difference Beam Pattern Synthesis of Low Side-lobe Using Phase Taper

作　　者：徐振华[1] 黄建国[1] 王秋红[1] 裴譞[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《兵工学报》2011年第3期286-291,共6页Acta Armamentarii

基　　金：国家自然科学基金资助(60972152)

摘　　要：为了解决低旁瓣和、差波束方向图合成问题,提出了一种低旁瓣和、差波束方向图合成的新方法。在相位锥化加权情况下,利用阵列因子与阵元激励之间存在的傅里叶变换对关系,根据给定的阵列因子应用循环迭代方式获取阵元激励系数,最终使其达到初始旁瓣要求。该方法解决了传统低旁瓣和、差波束方向图合成方法中存在的搜索次数多、计算量大、鲁棒性差的缺点;另外该方法可以有效解决阵元缺损情况下,均匀线列阵的低旁瓣和、差波束方向图合成问题。算法仿真验证了该方法的有效性。A new method for sum and difference beam forming pattern synthesis of low side-lobe is proposed.In phase cone-weighting,the method uses the property that,for a linear array with uniform element spacing,an inverse Fourier transform relationship exists between the array factor and the element excitation.This property can be used in an iterative way to derive the array element excitation from the prescribed array factor.The iteration does not stop until the array element excitation meets the initial side-lobe requirements.The method corrects the defects of traditional methods,in which there are more searching times,a much more larger amount of calculation and poor robustness.The effectiveness of the method also involves the recovery of the original low side-lobe pattern in case of element failures.The simulation results verify the validity of the method.

关 键 词：信息处理技术 波束合成 相位锥化加权 低旁瓣 循环迭代 

分 类 号：TN911.172[电子电信—通信与信息系统]