摘要
该文分析了晴空飞机尾流的相参多普勒雷达检测模型,提出了一种用于简化尾流检测器设计的方法,导出了相应的GLRT(广义似然比检验)检测器结构。推导得到了检测概率、虚警概率的解析表达式及其高斯近似形式,并将其推广应用到多个CPI(相参处理间隔)的检测性能分析。研究结果表明,该文提出的检测器可以有效增强飞机尾流的雷达探测性能。
A detection model is analyzed for detection of aircraft wake vortices in clear air using coherent Doppler radar. A method is proposed to simplify the detector design ,and the corresponding GLRT (Generalized Likelihood Ratio Test) detector is deduced. Analytical expressions and their Gaussian approximations of detection probability and false alarm probability are derived. The analytical approximations are generalized for analyzing the detection performance of muhi-CPI ( Coherent Processing Interval) echoes. The results show that, the proposed detector can effectively improve radar detection performance of aircraft wake vortices.
出处
《信号处理》
CSCD
北大核心
2009年第11期1794-1798,共5页
Journal of Signal Processing
基金
国家部委基金资助课题
关键词
雷达
飞机尾流
相参检测
广义似然比检验
Radar
Aircraft wake vortex
Coherent detection
Generalized likelihood ratio test