子空间约束秩1干扰下的雷达信号检测

考虑雷达待检测单元在受到子空间约束的秩1干扰情况下的自适应检测问题,即待检测单元背景噪声协方差矩阵中叠加有一个秩为1的干扰协方差矩阵,并假定干扰分量约束在一个已知的子空间内.采用双步广义似然比检验准则,得到子空间约束的秩为1的干扰检测器(subspace constrained rank one interferenc...

Radar signal detection with subspace constrained rank one interference

To sdve adaptive detection problem that the cell under test is contaminated by the subspace constrained rank one interference, namely the noise covariance matrix of the test data is superposed by a rank one interference covariance matrix, the interference is assumed to be located in a known subspace, and using the 2-step generalized likelihood ratio test criterion, we derive a subspace constrained rank one interference detector (SC-ROID). We also derive a rank-reduced adaptive coherent estimator (rr-ACE), which exploits the prior information of the interference to reduce the computational load. The computer simulation results show that, under the condition of no interference or no prior information of the interference, the SC-ROID performance amounts to the adaptive coherent estimator detector. In other cases, the SC-ROID outperforms other conventional detectors. The rr-ACE outperforms other competitors when the size of the reference data is low.