存在导向矢量误差的宽带分布式目标稳健检测算法

针对在相干积累期间转动引起导向矢量误差的分布式目标检测问题，提出了一种稳健检测算法。利用极大似然方法和拉格朗日乘子法对各个距离单元的信号进行估计，得到稳健的广义似然比检测算子。理论分析表明该算法的恒虚警率特性。对两类飞机实测数据的多个仿真结果表明，与传统的广义似然算法相比，该算法检测性能有明显的提高。

Robust detection method for spatial wideband distributed targets with steering vector mismatch

A robust detection algorithm for the spatial distributed target with steering vector mismatch due to target’s rotation during a coherent processing interval (CPI) is proposed. The proposed detector, robust generalized likelihood rate test (RGLRT), is derived by estimating signals from every range cell through maximum likelihood (ML) method and Lagrange multiplier method. It is proved that the RGLRT has the property of a constant false alarm rate (CFAR). Finally, experimental results for measured data of two planes illustrate that the proposed algorithm achieves a visible performance improvement comparing with the conventional GLRT method.