【作者】 奚玮；

【导师】 许录平；

【作者基本信息】 西安电子科技大学 ， 信号与信息处理， 2000， 硕士

【摘要】 本文讨论了利用数字信号处理的技术抑制从天线旁瓣进入雷达系统的有源干扰的问题，即自适应旁瓣相消技术。结合某型相控阵雷达研制的工程实际，从理论上分析了自适应旁瓣相消的工作原理、N个辅助通道对消R个干扰的对消效果、干扰信号与旁瓣相消权值的关系，提出了实现最佳旁瓣相消效果所需满足的条件。仿真计算了通道的相位不一致性对改善因子的影响。分析结果对雷达自适应旁瓣对消系统的整体设计和性能分析具有一定参考价值。本文提出了比原理样机更为优化的设计方案，其突出特点结构紧凑、设备量小、处理时间短、计算精度高。还介绍了利用ADSP21062芯片实现自适应旁瓣相消系统。更多还原

【Abstract】 In this article, the restraint of active interference from side-lobe of radar antenna with digitalsignal processing technique ?adaptive side-lobe cancellation technique" is discussed. Consideringthe development of phased array radar, some questions: the work principle of adaptive side-lobecancellation, the cancellation effect N assisting channels against R interference sources, therelationship between interfering signal and the power of side-lobe cancellation is analyzedtheoretically. The paper provides the best requirement of side-lobe cancellation and emulates thepositive effects of phase disaccord of the channel. The results will help to consult the designing ofphased array radar with adaptive side-lobe cancellation and to analyze its performance and function.Here, we provided an optimizing design better than the sample system. This design could providethe properties of smaller cubage, compact structure, higher precision and shorter response time.Besides, the adaptive side-lobe cancellation system realized by ADSP2 1062 is introduced.更多还原