一种低副瓣自适应单脉冲测角方法  

An Adaptive Monopulse Angle Estimation Approach with Low Sidelobe Level

作　　者：陈希信 龙伟军 张庆海 CHEN Xi-xin;LONG Wei-jun;ZHANG Qing-hai(Nanjing Vocational University of Industry Technology,Nanjing 210023,China;Nanjing Research Institute of Electronics Technology,Nanjing 210039,China)

机构地区：[1]南京工业职业技术大学,江苏南京210023 [2]南京电子技术研究所,江苏南京210039

出　　处：《中国电子科学研究院学报》2021年第5期496-498,共3页Journal of China Academy of Electronics and Information Technology

基　　金：国家自然科学基金资助项目(62071440,61671241)。

摘　　要：三点线性约束单脉冲方法是雷达中应用较多的自适应和差测角方法,但是由于只对差波束方向图的主瓣形状施加约束,因此副瓣较高。提出了一种低副瓣自适应单脉冲测角方法,通过适当增加差波束副瓣约束使得差波束副瓣电平降低20 dB以上,同时保持单脉冲比基本不变。理论分析和实验结果验证了文中方法的效果。Three-point linear constraint monopulse estimation is a widely-used adaptive angle estimation approach in the radar.However,it only constrains the mainlobe shape of difference pattern,so the sidelobe is very high.An adaptive monopulse angle estimation approach with low sidelobe level is presented.The sidelobe level is lowered with above 20 dB by appropriately adding the sidelobe constraint of adaptive difference pattern,simultaneously the monopulse ratio is almost the same as that of original approach.Finally,the effective result of presented approach is demonstrated by theory analysis and simulation example.

关 键 词：自适应阵 单脉冲测角 低副瓣电平 

分 类 号：TN958[电子电信—信号与信息处理]