子阵间约束自适应和差单脉冲测角算法  

Algorithm for constrained adaptive sum-difference monopulse among sub-arrays

作　　者：李荣锋[1] 饶灿[1] 戴凌燕[1] 王永良[2] 

机构地区：[1]空军预警学院雷达兵器运用工程军队重点实验室,湖北武汉430019 [2]空军预警学院科研部,湖北武汉430019

出　　处：《华中科技大学学报（自然科学版）》2013年第9期6-10,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家杰出青年自然科学基金资助项目(60925005)

摘　　要：提出了一种子阵间约束自适应和差单脉冲测角算法.该方法先联合各子阵和波束输出进行自适应处理,形成合成的自适应和波束,再对各子阵差波束输出进行自适应处理并同时约束单脉冲比,得到合成的约束差波束.由于在差波束自适应权形成中增加了全阵列单脉冲比约束,新方法自适应抑制主副瓣干扰的同时还能较好地保持单脉冲比不失真,并克服了子阵自适应处理带来的孔径损失,提高了目标角度的估计精度.计算机仿真实验证明了该方法的有效性.A constrained adaptive sub-array sum-difference monopulse algorithm was presented. Adaptive processing was first conducted for all sum beams of sub-arrays and then for all difference beams of sub-arrays adding monopulse ratio constraint, which yielded adaptive sum beam and con- strained difference beam respectively. Since the monopulse ratio constraint was imposed on whole ar- ray during calculating adaptive weight of difference beam, the new algorithm could null the mainlobe and sidelobe jammers effectively while keeping adaptive monopulse ratio undistorted. Moreover, the aperture loss due to sub-array was overcome. So the estimation accuracy of the target angle was im- proved. The simulation experiments have illustrated the validity of the proposed algorithm.

关 键 词：子阵 约束自适应 主瓣干扰 单脉冲测角 和差波束 

分 类 号：TN911.7[电子电信—通信与信息系统]