摘要
提出一种基于Anderson-Darling检验的恒虚警检测方法(AD-CFAR),根据输入杂波特性,实现干扰杂波块删除、杂波分布检测,具有参考单元数可变、检测策略可变的特点,提高了检测器复杂杂波环境下的鲁棒性。检测算法应用K样本Anderson-Darling假设检验对输入杂波单元进行分块筛选,输出同分布杂波块,再经过单样本Anderson-Darling分布检验判断杂波分布类型,综合现有的检测技术,选择合理的检测策略。性能分析表明,在均匀杂波条件下,AD-CFAR具有近似CA-CFAR的检测性能,在多干扰目标、杂波边缘以及两者同时存在时具有良好的虚警性能和检测性能。
A feasible Constant False Alarm Rate （CFAR） detector based on Anderson-Darling （AD） test for multiple interfering targets and clutter edge scenarios is proposed and referred as AD-CFAR, which chooses reference cell length and detection strategy adaptively according to characteristic of input clutter serials. AD-CFAR exploits K-sample Anderson-Darling hypothesis test to censor clutter blocks needed for clutter power estimation, and then Anderson-Darling test is employed for distribution test of the resultant homogenous clutter to select the proper detection algorithm from the strategy library. Theoretical analysis indicates that the proposed AD-CFAR maintains similar performance in homogeneous clutter to CA-CFAR and achieves excellent detection and false alarm performance in multiple interfering targets or clutter edge situation even when both are present.
出处
《光电工程》
CAS
CSCD
北大核心
2009年第2期39-44,共6页
Opto-Electronic Engineering
基金
航空基金资助项目(04D52032)
