海军航空大学学报2024，Vol.39Issue(2)：224-234,11.DOI:10.7682/j.issn.2097-1427.2024.02.005
子空间干扰加高斯杂波背景下基于GLRT的斜对称方向检测器设计
Design of Persymmetric Direction Detectors Based on GLRT Under Subspace Interference Plus Gaussian Clutter
摘要
Abstract
The problem of direction detection of range-spread targets with subspace interference plus Gaussian clutter in the background is studied,the clutter is Gaussian clutter with zero mean persymmetry covariance matrix unknown,the tar-get and interference are described by target subspace and interference subspace with persymmetry property.The persym-metry of the matrix is utilized for the direction detection problem,one-step and two-step design methods based on the gen-eralized likelihood ratio test(GLRT)criterion are proposed as one-step and two-step range-spread target direction detec-tors based on the GLRT.And it is proved by theoretical derivation that both detectors have constant false alarm rate with respect to the unknown clutter covariance matrix.Comparing with the existing detectors in the same background,especial-ly in the limited training data scenarios,the simulation results prove the effectiveness of the proposed two detectors.关键词
广义似然比检验/距离扩展目标/方向检测器/斜对称/恒虚警率Key words
Generalized Likelihood Ratio Test/range-spread target/direction detector/persymmetry/constant false alarm rate分类
信息技术与安全科学引用本文复制引用
田华飞,魏广芬,简涛,周战,罗沅..子空间干扰加高斯杂波背景下基于GLRT的斜对称方向检测器设计[J].海军航空大学学报,2024,39(2):224-234,11.基金项目
国家自然科学基金(61971432) （61971432）
泰山学者工程(No.tsqn201909156) （No.tsqn201909156）
山东省高等学校青创科技支持计划(2019KJN031) （2019KJN031）
