导向矢量失配条件下的参数化检测器的设计与分析  

Parametric Detector Design and Analysis Under the Condition of Steering Vector Mismatch

作　　者：翟庆林[1] 邹鲲[2] 李伟[2] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073 [2]空军工程大学信息与导航学院,陕西西安710077

出　　处：《信号处理》2016年第5期582-589,共8页Journal of Signal Processing

基　　金：航天科技创新基金(CASC040203);国家自然科学基金项目(61571456;61302153)

摘　　要：在检测器设计阶段所假定的信号模型与实际信号之间的失配,会导致检测性能的降低。将检测器参数化,通过调节参数值,可以实现检测器对失配信号检测性能的控制。本文将参数化检测器设计方法分为加数因子法、乘数因子法、指数因子法等,给出了不同设计方法获得检测器性能计算方法,并利用计算机仿真,分析了参数化检测器的可调性,信号匹配和失配下的检测性能。研究表明,采用加数因子法的参数化检测器可以获得更为稳健的检测性能,而采用指数因子法的参数化检测器可以获得更为敏感的检测性能。The mismatches of signal model determined at the design stage of detector and actual one lead to the degradation of detection performance. By parameterization of the detector,the tunable parameters can be used to control the level to which the signal to be rejected or detected. In this paper,the design methods for parametric detectors are classified into addend term method,product term method and exponential term method. The detection performance assessment is given for the detectors designed by different method. With the computer simulation,the adjustability and detection performance under matched or mismatched signal model are analyzed. The research results show that,parametric detector designed with addend term method can achieve more robust detection performance,and parametric detector designed with exponential term method can achieve more selective detection performance.

关 键 词：信号检测 导向矢量失配 参数化检测 可调检测器 

分 类 号：TN957.51[电子电信—信号与信息处理]