摘要
在分析双通道恒虚警率(CFAR)检测系统原理的基础上,以瑞利杂波分布为背景,建立了一个三元检测的数学模型,推导出线性检波下双通道CFAR检测器的虚警概率表达式。结合公式利用MATLAB仿真,定量分析了影响虚警概率的因素,并将其与单通道情况进行了比较,得出双通道的虚警概率是归一化门限与消隐门限的函数的结论。
Based on the analysis of dual channel radar CFAR detection principle, a mathematical model of ternary detection is established in Rayleigh environment, and the probability expression of false - alarm for dual - channel radar CFAR detector is deduced in linear detector. Combining of MATLAB simulation, the factors effecting false - alarm are analyzed quantificationally and compared with single channel radar CFAR detector. The conclusion that the probability of false - alarm is the function of normalized threshold and blanking threshold is drawn.
出处
《电讯技术》
2008年第12期63-66,共4页
Telecommunication Engineering
关键词
雷达信号检测
双通道雷达
恒虚警率检测
消隐门限
虚警概率
radar signal detection
dual channel radar
CFAR detection
blanking threshold
probabilityof false - alarm
