一种多目标精确计算恒虚警检测门限的方法——瑞利拟合法  

Method of Precise Accounting Constant False Alarm Limit by Multi-target——Rayleigh Fitting

作　　者：郑刚[1] 

机构地区：[1]中国电子科技集团公司第二十研究所,西安710068

出　　处：《现代导航》2012年第2期100-105,共6页Modern Navigation

摘　　要：雷达信号的恒虚警处理,在雷达自动检测中,是一个不可缺少的内容。目前关于计算检测门限的方法有很多。由于不同方法存在不同缺点和局限性,很难满足雷达系统的综合要求。本文借鉴传统恒虚警(CFAR)计算方法,提出一种新的恒虚警处理——瑞利拟合法。该方法与传统的恒虚警处理方法相比,不仅在多目标检测方面具有显著优点,而且检测门限精度高,很容易达到雷达指标要求。Constant false alarm rate of the radar signal is an indispensable content in the auto examination. There are many methods about accounting the examining limit. Because of the distinct methods which have the different disadvantages and limits, they can＇t satisfy with the integrated request by using the constant false alarm. Rayleigh fitting which is a new disposal method of constant false alarm is presented in this paper. Compared with the method of traditional constant false alarm, this method has the remarkable advantages in multi-target examining, and it can satisfy the guideline request of radar easier in examining the limit precision.

关 键 词：瑞利分布 数学拟合 虚警概率 恒虚警率 检测概率 雷达 噪声 

分 类 号：TN957[电子电信—信号与信息处理]