目标引入干扰条件下的Wald检测器
发布时间:2018-01-06 18:50
本文关键词:目标引入干扰条件下的Wald检测器 出处:《电子与信息学报》2017年09期 论文类型:期刊论文
更多相关文章: 自适应检测 多通道信号检测 目标引入干扰 Wald检测准则
【摘要】:多径效应或多输入多输出(MIMO)雷达发射波形不完全正交的情况下会引入干扰,此种干扰通常被称为目标引入干扰。针对存在目标引入干扰的目标检测问题,该文基于Wald准则提出适用于均匀环境和非均匀环境下的自适应检测器,所提出的检测器可有效抑制目标引入的干扰,且具有恒虚警率(CFAR)特性。仿真结果表明,当干扰子空间已知时,该文所提出的检测器可完全抑制干扰,当干扰子空间未知时,所提检测器可有效抑制位于信号子空间的正交补空间内的干扰。
[Abstract]:Multipath effect or multiple input multiple output (MIMO) radar waveform is not completely orthogonal case will introduce interference, such interference is often referred to as the goal. In order to solve the problem of the interference of target detection targets by the interference, this paper based on Wald criterion is proposed for uniform and non uniform environment adaptive detector, interference detector the proposed can effectively inhibit the target is introduced, and a constant false alarm rate (CFAR) performance. The simulation results show that when the interference subspace is known, the proposed detector can suppress interference, when the interference subspace is unknown, the proposed detector can effectively suppress the signal subspace in the orthogonal complement interference in the space.
【作者单位】: 空军预警学院;
【基金】:国家自然科学基金青年基金(61501505,61501506) 湖北省自然科学基金(2015CFB607)~~
【分类号】:TN957.51
【正文快照】: 多通道信号自适应检测是雷达领域的一个重要研究内容。针对高斯噪声背景下目标导向矢量已知的检测问题,Kelly[1]基于广义似然比准则(Generalized Likelihood Ratio Test,GLRT)提出了GLRT检测器,记作KGLRT检测器。基于GLRT准则的两步实现,文献[2]得到了自适应匹配滤波(Adaptive,
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