抑制雷达主波束内GSM干扰的极化滤波方法研究  

Investigation on of Polarization Filtering Scheme to Suppress GSM Interference in Radar Main Beam

作　　者：任博[1,2] 施龙飞[1,2] 王洪军 李永祯[1,2] 王国玉[1,2] 

机构地区：[1]国防科技大学电子信息系统复杂电磁环境效应国家重点实验室,长沙410073 [2]国防科学技术大学电子科学与工程学院,长沙410073 [3]武汉滨湖电子有限责任公司,武汉430077

出　　处：《电子与信息学报》2014年第2期459-464,共6页Journal of Electronics & Information Technology

摘　　要：针对雷达在实际中受到的GSM通信基站干扰问题,该文采用极化滤波抗干扰的方法,在现有自适应极化对消(APC)算法基础上提出了一种基于部分极化波最优接收的滤波算法,先估计GSM信号的部分极化Stokes矢量,后依据干扰功率最小原则计算最优接收极化。通过开展极化抗干扰外场试验,证明了极化滤波方法对于基站干扰抑制的有效性。与传统算法的比较说明了该方法在保证滤波效果的基础上,用于权值收敛的时间更短,性能更稳定。A polarization filtering scheme is employed to resolve interference from GSM base station to the radar in practice. By analyzing the existing Auto Polarization Cancellation （APC） algorithm, a new filtering algorithm based on the optimal reception of partially polarized signal is proposed. The polarization Stokes vector of GSM signal is estimated, and then the optimal receptive polarization is calculated on the principle of the minimum interference power. The effectiveness of polarization filter is finally validated by the experiment of interference suppression. Compared with the existing algorithm, the proposed method not only achieves good performance in anti-interference, but needs shorter time in weight convergence, and it is more stable as well.

关 键 词：雷达 GSM干扰 极化滤波 部分极化 抗干扰 

分 类 号：TN95[电子电信—信号与信息处理]