MTI滤波器最佳权矢量的快速算法  

A fast algorithm for obtaining the optimum weighting vector of the MTI filter

作　　者：陈建春[1] 徐少莹[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071

出　　处：《西安电子科技大学学报》2000年第3期300-304,共5页Journal of Xidian University

摘　　要：针对脉冲雷达中最常见的窄带高斯型杂波 ,导出一种基于最大平均改善因子准则的动目标显示(MTI)滤波器最佳权系数的实用近似快速算法 .这种算法运算量小、精度高 .与理论计算结果相比其MTI滤波器改善因子分贝数的相对损失小于 0 5 % ,改善因子倍数的相对损失小于 3 5 % .该算法能够实现MTI滤波器凹口与杂波谱的实时匹配 .与已有的杂波谱中心估计方法相结合 ,可用于实现杂波的实时自适应抑制 .A practical fast approximating of the optimum weighting coefficients for the MTI filter based on the Maximum Average Improvement Factor criterion is derived, which is effective for the pulse radar in the narrow band Gaussian type clutter environment. It has the advantages of less computation requirement, higher precision (with the relative loss of average IF in dB less than 0 5%) and capability of matching the MTI filter notch with the clutter spectrum in real time sense. Combined with the clutter spectrum center estimation methods, a real time adaptive clutter rejection can be achieved.

关 键 词：雷达杂波 动目标显示滤波器 脉冲雷达 

分 类 号：TN957.51[电子电信—信号与信息处理]