子阵级自适应单脉冲的四通道主瓣干扰抑制  

Four-channel mainlobe jamming suppression for adaptive monopulse at subarray level

作　　者：胡航[1] 张皓[1] 宗成阁[1] 徐颖 

机构地区：[1]哈尔滨工业大学电子与信息技术研究院,黑龙江哈尔滨150001 [2]毫米波/亚毫米波末制导技术国防科技重点实验室,北京100854

出　　处：《电波科学学报》2009年第5期820-825,984,共7页Chinese Journal of Radio Science

基　　金：中国博士后科学基金面上资助项目(20080430905);中国博士后科学基金特别资助项目(200902412);航空科学基金资助项目(20092077010);航天支撑基金项目

摘　　要：子阵级自适应单脉冲是将单脉冲估计应用于相控阵雷达必需采用的方法,而主瓣干扰抑制是其关键技术。针对平面相控阵,应用四通道单脉冲系统(其中双差通道作为辅助通道),提出子阵级四通道系统的信号模型。给出子阵级自适应单脉冲的主瓣干扰抑制方法;在对一个方向(俯仰或方位)的主瓣干扰进行抑制的同时,可使其正交方向(方位或俯仰)的单脉冲比保持不变(与静态单脉冲比相同)。该方法无需对自适应和、差波束的输出进行校正。仿真结果证明了其有效性。The adaptive monopulse at subarray level is required for applying monopulse technique to phased array radar, in which the mainlobe jamming suppression is critical. Aiming at planar phased array, the four-channel system is adopted, where the delta-delta channel is used as an auxiliary channel. The signal model of fourchannel system at subarray level is presented. The mainlobe jamming suppression approach, for adaptive monopulse at subarray level, is illustrated, and as return, the jammers are suppressed with nulls along one direction（elevation or azimuth） and undistorted monopulse ratio along the orthogonal direction（azimuth or eleva- tion） is preserved. The proposed approach does not require any correction of the adaptive sum and difference beam outputs. Simulation results demonstrate its validity.

关 键 词：自适应单脉冲 子阵级相控阵 主瓣干扰 四通道系统 

分 类 号：TN957.51[电子电信—信号与信息处理]