自适应旁瓣相消的性能分析与仿真  

Performance Analysis and Simulation of Adaptive Sidelobe Canceller

作　　者：张俊平[1] 宋万杰[1] 张子敬[1] 胡敏 

机构地区：[1]西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071 [2]南湖机械总厂,湖北荆州434000

出　　处：《雷达科学与技术》2008年第6期486-491,共6页Radar Science and Technology

基　　金：国防预研基金

摘　　要：在数字阵列雷达中自适应旁瓣相消技术是抑制有源干扰的有效措施,理论上干扰是可以完全对消,但实际应用中由于存在诸多因素影响使对消效果明显下降。该文以自适应旁瓣相消基本理论为基础,深入探讨了自适应旁瓣相消的理论性能与实际性能相差甚远的各种原因,包括通道噪声、时延带宽积、带宽不一致、中心频率不一致、幅度相位特性差异、主天线旁瓣敏感性对旁瓣相消性能造成的影响,并通过大量仿真分析了各项因素对相消性能的影响,对实际工作有重要的参考价值。Adaptive sidelobe cancelation algorithm is an effective method to suppress active interference in digital array radar. For adaptive side/obe cancelation algoritbm, the performanee in practice suffers loss compared with the performance in theory. Based on the basic theory of adaptive sidelohe canceller, some factors, including channel noises, products of bandwidth and time delay, bandwidth inconsistency, central frequency inconsistency, and the characteristic difference between amplitude and phase, are analyzed in this paper by simulation experiments.

关 键 词：自适应天线 自适应旁瓣相消 对消比 

分 类 号：TN957[电子电信—信号与信息处理]