摘要
本文介绍一种机载相控阵雷达地杂波抑制的新方法，它属于数据变换类，变换矩阵由主通道和辅助通道组成的联合通道子空间决定。通过设计主通道，变换维数由ＭＫ降至Ｍ＋Ｋ－１（Ｍ）为阵元个数，Ｋ为脉冲数）。该变换由空域波束形成和时域多普勒滤波实现。变换后的数据将在Ｍ＋Ｋ－１维信号空间内进行最优滤波，新方法即使在阵元误差和杂波起伏时也可很好地逼近二维最优阵列性能，但所需的运算量要小得多。
A new approach for clutter suppression in airborne phased radar is presented in the paper. It belongs to the class of data transformation method. The transform matrix is dependent on the combined channel subspace spanned by main channel and auxiliary channels.By designing the main channel,the transform dimensionality is reduced to M+K-1(M is the number of sensors and K is the number of pulses).The transformed optimal weight is obtained in this M +K-1 dimensional signal subspace. This approach can approximate the 2D optimal array well even under array errors and clutter fluctuations,and its volume of computation is much less compared to 2D optimal receiver.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1994年第6期1-9,共9页
Acta Electronica Sinica
基金
国防科技基金
关键词
机载雷达
杂波抑制
自适应阵列
Airborne radar
Spatial-temporal adaptive processing
Clutter suppression
Adaptive array
