宽带波束形成中小数时延滤波器设计  

Design of Fractional Time Delay Filter in Broadband Beam Forming

作　　者：翟羽佳[1] 胡谨贤[1] 黎仁刚[1] 

机构地区：[1]中国船舶重工集团公司第723研究所,扬州225001

出　　处：《舰船电子对抗》2014年第5期110-113,共4页Shipboard Electronic Countermeasure

摘　　要：以电子战中的宽带波束形成器设计为背景,阐述了数字延迟线与小数时延滤波器相结合的时域波束形成方案,并引入广泛应用于多速率系统中的Farrow结构可变时延滤波器。针对宽带Farrow结构滤波器中乘法器资源消耗量较大的问题,采用对称结构的子滤波器系数求解方法,最后通过多次仿真验证了设计的合理性并给出相关设计参数的一般取值,为后续工程上的实现奠定了理论基础。This paper expatiates the time-domain beam forming method combining digital delay linewith fractional time delay filter taking the broadband beam-former design in electronic warfare as background, and introduces variable time delay filter with Farrow structure being widely used in multi-rate system. Aiming at the problem of much consumption of multiplicators in broadband fil- ter with Farrow structure, this paper uses the solving method of sub-filter coefficient with symme- try structure, finally validates the design rationality through multiple simulations, and presents general values of correlative design parameters, which provides the theory foundation for latter en- gineering realization.

关 键 词：电子战 宽带波束形成 小数时延滤波器 FARROW结构 

分 类 号：TN713[电子电信—电路与系统]